155172156216707 has 32 divisors (see below), whose sum is σ = 192410620385280. Its totient is φ = 122156335301760.

The previous prime is 155172156216677. The next prime is 155172156216761. The reversal of 155172156216707 is 707612651271551.

It is a cyclic number.

It is not a de Polignac number, because 155172156216707 - 2¹⁴ = 155172156200323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155172156215707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55555019 + ... + 58281252.

It is an arithmetic number, because the mean of its divisors is an integer number (6012831887040).

Almost surely, 2^{155172156216707} is an apocalyptic number.

155172156216707 is a deficient number, since it is larger than the sum of its proper divisors (37238464168573).

155172156216707 is a wasteful number, since it uses less digits than its factorization.

155172156216707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113836611.

The product of its (nonzero) digits is 6174000, while the sum is 56.

The spelling of 155172156216707 in words is "one hundred fifty-five trillion, one hundred seventy-two billion, one hundred fifty-six million, two hundred sixteen thousand, seven hundred seven".