40624334621 has 4 divisors (see below), whose sum is σ = 43749283452. Its totient is φ = 37499385792.

The previous prime is 40624334603. The next prime is 40624334627. The reversal of 40624334621 is 12643342604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3419325625 + 37205008996 = 58475^2 + 192886^2 .

It is a cyclic number.

It is not a de Polignac number, because 40624334621 - 2¹⁸ = 40624072477 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 (40624334627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562474396 + ... + 1562474421.

It is an arithmetic number, because the mean of its divisors is an integer number (10937320863).

Almost surely, 2^40624334621 is an apocalyptic number.

It is an amenable number.

40624334621 is a deficient number, since it is larger than the sum of its proper divisors (3124948831).

40624334621 is a wasteful number, since it uses less digits than its factorization.

40624334621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124948830.

The product of its (nonzero) digits is 82944, while the sum is 35.

The spelling of 40624334621 in words is "forty billion, six hundred twenty-four million, three hundred thirty-four thousand, six hundred twenty-one".