154123400628 has 18 divisors (see below), whose sum is σ = 389589707234. Its totient is φ = 51374466864.

The previous prime is 154123400597. The next prime is 154123400659. The reversal of 154123400628 is 826004321451.

It is a happy number.

154123400628 is a `hidden beast` number, since 1 + 5 + 4 + 1 + 23 + 4 + 0 + 0 + 628 = 666.

It is an interprime number because it is at equal distance from previous prime (154123400597) and next prime (154123400659).

It can be written as a sum of positive squares in only one way, i.e., 147165838884 + 6957561744 = 383622^2 + 83412^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×154123400628² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4281205573 = 154123400628 / (1 + 5 + 4 + 1 + 2 + 3 + 4 + 0 + 0 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 154123400592 and 154123400601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2140602751 + ... + 2140602822.

Almost surely, 2^154123400628 is an apocalyptic number.

154123400628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

154123400628 is an abundant number, since it is smaller than the sum of its proper divisors (235466306606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154123400628 is a wasteful number, since it uses less digits than its factorization.

154123400628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281205583 (or 4281205578 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 154123400628 in words is "one hundred fifty-four billion, one hundred twenty-three million, four hundred thousand, six hundred twenty-eight".