155311725657772 has 12 divisors (see below), whose sum is σ = 272061725118736. Its totient is φ = 77579804195280.

The previous prime is 155311725657731. The next prime is 155311725657887. The reversal of 155311725657772 is 277756527113551.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19014653808 + ... + 19014661975.

Almost surely, 2^{155311725657772} is an apocalyptic number.

It is an amenable number.

155311725657772 is a deficient number, since it is larger than the sum of its proper divisors (116749999460964).

155311725657772 is a wasteful number, since it uses less digits than its factorization.

155311725657772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38029316808 (or 38029316806 counting only the distinct ones).

The product of its digits is 108045000, while the sum is 64.

The spelling of 155311725657772 in words is "one hundred fifty-five trillion, three hundred eleven billion, seven hundred twenty-five million, six hundred fifty-seven thousand, seven hundred seventy-two".