21376029524 has 24 divisors (see below), whose sum is σ = 39040989120. Its totient is φ = 10221616064.

The previous prime is 21376029497. The next prime is 21376029527. The reversal of 21376029524 is 42592067312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21376029527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668207 + ... + 699465.

It is an arithmetic number, because the mean of its divisors is an integer number (1626707880).

Almost surely, 2^21376029524 is an apocalyptic number.

It is an amenable number.

21376029524 is a deficient number, since it is larger than the sum of its proper divisors (17664959596).

21376029524 is a wasteful number, since it uses less digits than its factorization.

21376029524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38719 (or 38717 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 21376029524 in words is "twenty-one billion, three hundred seventy-six million, twenty-nine thousand, five hundred twenty-four".