155974272907 has 4 divisors (see below), whose sum is σ = 156177101080. Its totient is φ = 155771444736.

The previous prime is 155974272901. The next prime is 155974272911. The reversal of 155974272907 is 709272479551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709272479551 = 139 ⋅5102679709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155974272907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155974272901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101412933 + ... + 101414470.

It is an arithmetic number, because the mean of its divisors is an integer number (39044275270).

Almost surely, 2^155974272907 is an apocalyptic number.

155974272907 is a deficient number, since it is larger than the sum of its proper divisors (202828173).

155974272907 is an equidigital number, since it uses as much as digits as its factorization.

155974272907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202828172.

The product of its (nonzero) digits is 11113200, while the sum is 58.

The spelling of 155974272907 in words is "one hundred fifty-five billion, nine hundred seventy-four million, two hundred seventy-two thousand, nine hundred seven".