155209951404 has 72 divisors (see below), whose sum is σ = 394568450640. Its totient is φ = 51443023872.

The previous prime is 155209951399. The next prime is 155209951441. The reversal of 155209951404 is 404159902551.

155209951404 is a `hidden beast` number, since 1 + 552 + 0 + 9 + 9 + 51 + 40 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 155209951404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5249647 + ... + 5279129.

It is an arithmetic number, because the mean of its divisors is an integer number (5480117370).

Almost surely, 2^155209951404 is an apocalyptic number.

It is an amenable number.

155209951404 is an abundant number, since it is smaller than the sum of its proper divisors (239358499236).

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

155209951404 is a wasteful number, since it uses less digits than its factorization.

155209951404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30319 (or 30314 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 155209951404 in words is "one hundred fifty-five billion, two hundred nine million, nine hundred fifty-one thousand, four hundred four".