158188732257 has 16 divisors (see below), whose sum is σ = 212877720000. Its totient is φ = 104479671744.

The previous prime is 158188732249. The next prime is 158188732277. The reversal of 158188732257 is 752237881851.

158188732257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 158188732257 - 2³ = 158188732249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158188732197 and 158188732206.

It is not an unprimeable number, because it can be changed into a prime (158188732277) 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 15 ways as a sum of consecutive naturals, for example, 3528619 + ... + 3573167.

It is an arithmetic number, because the mean of its divisors is an integer number (13304857500).

Almost surely, 2^158188732257 is an apocalyptic number.

It is an amenable number.

158188732257 is a deficient number, since it is larger than the sum of its proper divisors (54688987743).

158188732257 is a wasteful number, since it uses less digits than its factorization.

158188732257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55520.

The product of its digits is 7526400, while the sum is 57.

It can be divided in two parts, 158188 and 732257, that added together give a triangular number (890445 = T₁₃₃₄).

The spelling of 158188732257 in words is "one hundred fifty-eight billion, one hundred eighty-eight million, seven hundred thirty-two thousand, two hundred fifty-seven".