155651211260406 has 24 divisors (see below), whose sum is σ = 337331008698840. Its totient is φ = 51870395912256.

The previous prime is 155651211260383. The next prime is 155651211260423. The reversal of 155651211260406 is 604062112156551.

155651211260406 is a `hidden beast` number, since 1 + 5 + 5 + 6 + 5 + 1 + 21 + 12 + 604 + 0 + 6 = 666.

It is a super-2 number, since 2×155651211260406² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1111692600 + ... + 1111832603.

It is an arithmetic number, because the mean of its divisors is an integer number (14055458695785).

Almost surely, 2^{155651211260406} is an apocalyptic number.

155651211260406 is an abundant number, since it is smaller than the sum of its proper divisors (181679797438434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155651211260406 is a wasteful number, since it uses less digits than its factorization.

155651211260406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223529100 (or 2223529097 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 155651211260406 in words is "one hundred fifty-five trillion, six hundred fifty-one billion, two hundred eleven million, two hundred sixty thousand, four hundred six".