155157513771 has 32 divisors (see below), whose sum is σ = 226676459520. Its totient is φ = 93817615104.

The previous prime is 155157513769. The next prime is 155157513779. The reversal of 155157513771 is 177315751551.

It is not a de Polignac number, because 155157513771 - 2¹ = 155157513769 is a prime.

It is a Smith number, since the sum of its digits (48) 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 155157513771.

It is not an unprimeable number, because it can be changed into a prime (155157513779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5063031 + ... + 5093583.

It is an arithmetic number, because the mean of its divisors is an integer number (7083639360).

Almost surely, 2^155157513771 is an apocalyptic number.

155157513771 is a deficient number, since it is larger than the sum of its proper divisors (71518945749).

155157513771 is a wasteful number, since it uses less digits than its factorization.

155157513771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32835.

The product of its digits is 643125, while the sum is 48.

The spelling of 155157513771 in words is "one hundred fifty-five billion, one hundred fifty-seven million, five hundred thirteen thousand, seven hundred seventy-one".