155512712761 has 32 divisors (see below), whose sum is σ = 199841160960. Its totient is φ = 117800718336.

The previous prime is 155512712759. The next prime is 155512712791. The reversal of 155512712761 is 167217215551.

155512712761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155512712761 - 2¹ = 155512712759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155512712711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48846 + ... + 559831.

It is an arithmetic number, because the mean of its divisors is an integer number (6245036280).

Almost surely, 2^155512712761 is an apocalyptic number.

It is an amenable number.

155512712761 is a deficient number, since it is larger than the sum of its proper divisors (44328448199).

155512712761 is a wasteful number, since it uses less digits than its factorization.

155512712761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608833.

The product of its digits is 147000, while the sum is 43.

The spelling of 155512712761 in words is "one hundred fifty-five billion, five hundred twelve million, seven hundred twelve thousand, seven hundred sixty-one".