40064305251 has 4 divisors (see below), whose sum is σ = 53419073672. Its totient is φ = 26709536832.

The previous prime is 40064305241. The next prime is 40064305279. The reversal of 40064305251 is 15250346004.

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

It is not a de Polignac number, because 40064305251 - 2⁶ = 40064305187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40064305231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6677384206 + ... + 6677384211.

It is an arithmetic number, because the mean of its divisors is an integer number (13354768418).

Almost surely, 2^40064305251 is an apocalyptic number.

40064305251 is a deficient number, since it is larger than the sum of its proper divisors (13354768421).

40064305251 is a wasteful number, since it uses less digits than its factorization.

40064305251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13354768420.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 40064305251 in words is "forty billion, sixty-four million, three hundred five thousand, two hundred fifty-one".