118145423628 has 18 divisors (see below), whose sum is σ = 298645376484. Its totient is φ = 39381807864.

The previous prime is 118145423623. The next prime is 118145423647. The reversal of 118145423628 is 826324541811.

118145423628 is a `hidden beast` number, since 1 + 1 + 8 + 14 + 5 + 4 + 2 + 3 + 628 = 666.

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

It is a super-2 number, since 2×118145423628² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118145423623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1640908626 + ... + 1640908697.

Almost surely, 2^118145423628 is an apocalyptic number.

118145423628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

118145423628 is an abundant number, since it is smaller than the sum of its proper divisors (180499952856).

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

118145423628 is a wasteful number, since it uses less digits than its factorization.

118145423628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281817333 (or 3281817328 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The spelling of 118145423628 in words is "one hundred eighteen billion, one hundred forty-five million, four hundred twenty-three thousand, six hundred twenty-eight".