156842490957 has 8 divisors (see below), whose sum is σ = 209634626880. Its totient is φ = 104306007840.

The previous prime is 156842490949. The next prime is 156842490989. The reversal of 156842490957 is 759094248651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 156842490957 - 2³ = 156842490949 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 156842490957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156842492957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63911769 + ... + 63914222.

It is an arithmetic number, because the mean of its divisors is an integer number (26204328360).

Almost surely, 2^156842490957 is an apocalyptic number.

It is an amenable number.

156842490957 is a deficient number, since it is larger than the sum of its proper divisors (52792135923).

156842490957 is a wasteful number, since it uses less digits than its factorization.

156842490957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127826403.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 156842490957 in words is "one hundred fifty-six billion, eight hundred forty-two million, four hundred ninety thousand, nine hundred fifty-seven".