40164676621 has 16 divisors (see below), whose sum is σ = 42576019200. Its totient is φ = 37824308928.

The previous prime is 40164676609. The next prime is 40164676627. The reversal of 40164676621 is 12667646104.

It is a cyclic number.

It is not a de Polignac number, because 40164676621 - 2⁹ = 40164676109 is a prime.

It is a super-2 number, since 2×40164676621² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40164676627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874195 + ... + 918991.

It is an arithmetic number, because the mean of its divisors is an integer number (2661001200).

Almost surely, 2^40164676621 is an apocalyptic number.

It is an amenable number.

40164676621 is a deficient number, since it is larger than the sum of its proper divisors (2411342579).

40164676621 is a wasteful number, since it uses less digits than its factorization.

40164676621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45588.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 40164676621 in words is "forty billion, one hundred sixty-four million, six hundred seventy-six thousand, six hundred twenty-one".