21372077841933 has 96 divisors (see below), whose sum is σ = 37580576355840. Its totient is φ = 10678921545600.

The previous prime is 21372077841931. The next prime is 21372077841967. The reversal of 21372077841933 is 33914877027312.

It is not a de Polignac number, because 21372077841933 - 2¹ = 21372077841931 is a prime.

It is a super-2 number, since 2×21372077841933² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21372077841931) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 616763658 + ... + 616798308.

It is an arithmetic number, because the mean of its divisors is an integer number (391464337040).

Almost surely, 2^{21372077841933} is an apocalyptic number.

It is an amenable number.

21372077841933 is a deficient number, since it is larger than the sum of its proper divisors (16208498513907).

21372077841933 is a wasteful number, since it uses less digits than its factorization.

21372077841933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51687 (or 51680 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 21372077841933 in words is "twenty-one trillion, three hundred seventy-two billion, seventy-seven million, eight hundred forty-one thousand, nine hundred thirty-three".