21037500502 has 8 divisors (see below), whose sum is σ = 31580472816. Its totient is φ = 10510676232.

The previous prime is 21037500469. The next prime is 21037500503. The reversal of 21037500502 is 20500573012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21037500503) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4033753 + ... + 4038964.

It is an arithmetic number, because the mean of its divisors is an integer number (3947559102).

Almost surely, 2^21037500502 is an apocalyptic number.

21037500502 is a deficient number, since it is larger than the sum of its proper divisors (10542972314).

21037500502 is a wasteful number, since it uses less digits than its factorization.

21037500502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8074022.

The product of its (nonzero) digits is 2100, while the sum is 25.

The spelling of 21037500502 in words is "twenty-one billion, thirty-seven million, five hundred thousand, five hundred two".