2640586051 has 4 divisors (see below), whose sum is σ = 2641045504. Its totient is φ = 2640126600.

The previous prime is 2640586037. The next prime is 2640586057. The reversal of 2640586051 is 1506850462.

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 2640586051 - 2¹¹ = 2640584003 is a prime.

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 2640586051.

It is not an unprimeable number, because it can be changed into a prime (2640586057) 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, 220995 + ... + 232636.

It is an arithmetic number, because the mean of its divisors is an integer number (660261376).

Almost surely, 2^2640586051 is an apocalyptic number.

2640586051 is a deficient number, since it is larger than the sum of its proper divisors (459453).

2640586051 is an equidigital number, since it uses as much as digits as its factorization.

2640586051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459452.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 2640586051 is about 51386.6329992538. The cubic root of 2640586051 is about 1382.1869076388.

The spelling of 2640586051 in words is "two billion, six hundred forty million, five hundred eighty-six thousand, fifty-one".