657652555051 has 4 divisors (see below), whose sum is σ = 658321582032. Its totient is φ = 656983528072.

The previous prime is 657652555037. The next prime is 657652555057. The reversal of 657652555051 is 150555256756.

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 657652555051 - 2⁹ = 657652554539 is a prime.

It is a super-2 number, since 2×657652555051² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 657652555051.

It is not an unprimeable number, because it can be changed into a prime (657652555057) 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, 334512016 + ... + 334513981.

It is an arithmetic number, because the mean of its divisors is an integer number (164580395508).

Almost surely, 2^657652555051 is an apocalyptic number.

657652555051 is a deficient number, since it is larger than the sum of its proper divisors (669026981).

657652555051 is an equidigital number, since it uses as much as digits as its factorization.

657652555051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669026980.

The product of its (nonzero) digits is 7875000, while the sum is 52.

The spelling of 657652555051 in words is "six hundred fifty-seven billion, six hundred fifty-two million, five hundred fifty-five thousand, fifty-one".