201015256995 has 24 divisors (see below), whose sum is σ = 398201652576. Its totient is φ = 91892688768.

The previous prime is 201015256957. The next prime is 201015257021. The reversal of 201015256995 is 599652510102.

201015256995 is a `hidden beast` number, since 20 + 10 + 1 + 52 + 569 + 9 + 5 = 666.

It is not a de Polignac number, because 201015256995 - 2⁷ = 201015256867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 201015256995.

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, 319071522 + ... + 319072151.

It is an arithmetic number, because the mean of its divisors is an integer number (16591735524).

Almost surely, 2^201015256995 is an apocalyptic number.

201015256995 is a deficient number, since it is larger than the sum of its proper divisors (197186395581).

201015256995 is a wasteful number, since it uses less digits than its factorization.

201015256995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638143691 (or 638143688 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 201015256995 in words is "two hundred one billion, fifteen million, two hundred fifty-six thousand, nine hundred ninety-five".