154246492681 has 4 divisors (see below), whose sum is σ = 160952861952. Its totient is φ = 147540123412.

The previous prime is 154246492679. The next prime is 154246492693. The reversal of 154246492681 is 186294642451.

154246492681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186294642451 = 2141 ⋅87012911.

It is a cyclic number.

It is not a de Polignac number, because 154246492681 - 2¹ = 154246492679 is a prime.

It is a super-2 number, since 2×154246492681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154246492661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353184601 + ... + 3353184646.

It is an arithmetic number, because the mean of its divisors is an integer number (40238215488).

Almost surely, 2^154246492681 is an apocalyptic number.

It is an amenable number.

154246492681 is a deficient number, since it is larger than the sum of its proper divisors (6706369271).

154246492681 is an equidigital number, since it uses as much as digits as its factorization.

154246492681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706369270.

The product of its digits is 3317760, while the sum is 52.

The spelling of 154246492681 in words is "one hundred fifty-four billion, two hundred forty-six million, four hundred ninety-two thousand, six hundred eighty-one".