155957128063 has 16 divisors (see below), whose sum is σ = 170963020800. Its totient is φ = 141090907680.

The previous prime is 155957128037. The next prime is 155957128097. The reversal of 155957128063 is 360821759551.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155957128063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155957128063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155957128163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836970 + ... + 1919992.

It is an arithmetic number, because the mean of its divisors is an integer number (10685188800).

Almost surely, 2^155957128063 is an apocalyptic number.

155957128063 is a deficient number, since it is larger than the sum of its proper divisors (15005892737).

155957128063 is a wasteful number, since it uses less digits than its factorization.

155957128063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83862.

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 155957128063 in words is "one hundred fifty-five billion, nine hundred fifty-seven million, one hundred twenty-eight thousand, sixty-three".