156261385957 has 8 divisors (see below), whose sum is σ = 156805032384. Its totient is φ = 155718665088.

The previous prime is 156261385921. The next prime is 156261385981. The reversal of 156261385957 is 759583162651.

It is a happy number.

156261385957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 156261385957 - 2¹¹ = 156261383909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156261385157) 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 7 ways as a sum of consecutive naturals, for example, 107718 + ... + 569320.

It is an arithmetic number, because the mean of its divisors is an integer number (19600629048).

Almost surely, 2^156261385957 is an apocalyptic number.

It is an amenable number.

156261385957 is a deficient number, since it is larger than the sum of its proper divisors (543646427).

156261385957 is an equidigital number, since it uses as much as digits as its factorization.

156261385957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462779.

The product of its digits is 13608000, while the sum is 58.

The spelling of 156261385957 in words is "one hundred fifty-six billion, two hundred sixty-one million, three hundred eighty-five thousand, nine hundred fifty-seven".