155147547656451 has 32 divisors (see below), whose sum is σ = 244398920122368. Its totient is φ = 85670262421920.

The previous prime is 155147547656443. The next prime is 155147547656561. The reversal of 155147547656451 is 154656745741551.

It is not a de Polignac number, because 155147547656451 - 2³ = 155147547656443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155147547656351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174022341 + ... + 174911606.

It is an arithmetic number, because the mean of its divisors is an integer number (7637466253824).

Almost surely, 2^{155147547656451} is an apocalyptic number.

155147547656451 is a deficient number, since it is larger than the sum of its proper divisors (89251372465917).

155147547656451 is a wasteful number, since it uses less digits than its factorization.

155147547656451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348934671.

The product of its digits is 352800000, while the sum is 66.

The spelling of 155147547656451 in words is "one hundred fifty-five trillion, one hundred forty-seven billion, five hundred forty-seven million, six hundred fifty-six thousand, four hundred fifty-one".