204772104751 has 4 divisors (see below), whose sum is σ = 204776512552. Its totient is φ = 204767696952.

The previous prime is 204772104737. The next prime is 204772104763. The reversal of 204772104751 is 157401277402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204772104751 - 2⁹ = 204772104239 is a prime.

It is a super-2 number, since 2×204772104751² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204772104451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133465 + ... + 2227378.

It is an arithmetic number, because the mean of its divisors is an integer number (51194128138).

Almost surely, 2^204772104751 is an apocalyptic number.

204772104751 is a deficient number, since it is larger than the sum of its proper divisors (4407801).

204772104751 is an equidigital number, since it uses as much as digits as its factorization.

204772104751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407800.

The product of its (nonzero) digits is 109760, while the sum is 40.

The spelling of 204772104751 in words is "two hundred four billion, seven hundred seventy-two million, one hundred four thousand, seven hundred fifty-one".