21337688376 has 48 divisors (see below), whose sum is σ = 57900594960. Its totient is φ = 7098898560.

The previous prime is 21337688303. The next prime is 21337688417. The reversal of 21337688376 is 67388673312.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 246900 + ... + 321923.

It is an arithmetic number, because the mean of its divisors is an integer number (1206262395).

Almost surely, 2^21337688376 is an apocalyptic number.

It is an amenable number.

21337688376 is an abundant number, since it is smaller than the sum of its proper divisors (36562906584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21337688376 is a wasteful number, since it uses less digits than its factorization.

21337688376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569356 (or 569349 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 21337688376 in words is "twenty-one billion, three hundred thirty-seven million, six hundred eighty-eight thousand, three hundred seventy-six".