155011252507665 has 32 divisors (see below), whose sum is σ = 248081978669952. Its totient is φ = 82651345920000.

The previous prime is 155011252507633. The next prime is 155011252507679. The reversal of 155011252507665 is 566705252110551.

It is not a de Polignac number, because 155011252507665 - 2⁵ = 155011252507633 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 976486350 + ... + 976645080.

It is an arithmetic number, because the mean of its divisors is an integer number (7752561833436).

Almost surely, 2^{155011252507665} is an apocalyptic number.

155011252507665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155011252507665 is a deficient number, since it is larger than the sum of its proper divisors (93070726162287).

155011252507665 is a wasteful number, since it uses less digits than its factorization.

155011252507665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175121.

The product of its (nonzero) digits is 3150000, while the sum is 51.

The spelling of 155011252507665 in words is "one hundred fifty-five trillion, eleven billion, two hundred fifty-two million, five hundred seven thousand, six hundred sixty-five".