40264776421 has 4 divisors (see below), whose sum is σ = 42383975200. Its totient is φ = 38145577644.

The previous prime is 40264776389. The next prime is 40264776509. The reversal of 40264776421 is 12467746204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40264776421 - 2⁵ = 40264776389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40264776521) 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, 1059599361 + ... + 1059599398.

It is an arithmetic number, because the mean of its divisors is an integer number (10595993800).

Almost surely, 2^40264776421 is an apocalyptic number.

It is an amenable number.

40264776421 is a deficient number, since it is larger than the sum of its proper divisors (2119198779).

40264776421 is a wasteful number, since it uses less digits than its factorization.

40264776421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119198778.

The product of its (nonzero) digits is 451584, while the sum is 43.

The spelling of 40264776421 in words is "forty billion, two hundred sixty-four million, seven hundred seventy-six thousand, four hundred twenty-one".