21640253000674 has 64 divisors (see below), whose sum is σ = 42602978304000. Its totient is φ = 7986974544000.

The previous prime is 21640253000669. The next prime is 21640253000701. The reversal of 21640253000674 is 47600035204612.

It is a super-2 number, since 2×21640253000674² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44228974 + ... + 44715574.

It is an arithmetic number, because the mean of its divisors is an integer number (665671536000).

Almost surely, 2^{21640253000674} is an apocalyptic number.

21640253000674 is a deficient number, since it is larger than the sum of its proper divisors (20962725303326).

21640253000674 is a wasteful number, since it uses less digits than its factorization.

21640253000674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501839.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 21640253000674 in words is "twenty-one trillion, six hundred forty billion, two hundred fifty-three million, six hundred seventy-four", and thus it is an aban number.