40636510651 has 12 divisors (see below), whose sum is σ = 44672154912. Its totient is φ = 36937670000.

The previous prime is 40636510637. The next prime is 40636510679. The reversal of 40636510651 is 15601563604.

It is not a de Polignac number, because 40636510651 - 2²¹ = 40634413499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40636510651.

It is not an unprimeable number, because it can be changed into a prime (40636510631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1288926 + ... + 1320076.

It is an arithmetic number, because the mean of its divisors is an integer number (3722679576).

Almost surely, 2^40636510651 is an apocalyptic number.

40636510651 is a deficient number, since it is larger than the sum of its proper divisors (4035644261).

40636510651 is a wasteful number, since it uses less digits than its factorization.

40636510651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41954 (or 41943 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 40636510651 in words is "forty billion, six hundred thirty-six million, five hundred ten thousand, six hundred fifty-one".