21363373490 has 32 divisors (see below), whose sum is σ = 39432476160. Its totient is φ = 8328355200.

The previous prime is 21363373399. The next prime is 21363373513. The reversal of 21363373490 is 9437336312.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380021 + ... + 432599.

It is an arithmetic number, because the mean of its divisors is an integer number (1232264880).

Almost surely, 2^21363373490 is an apocalyptic number.

21363373490 is a deficient number, since it is larger than the sum of its proper divisors (18069102670).

21363373490 is a wasteful number, since it uses less digits than its factorization.

21363373490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53618.

The product of its (nonzero) digits is 244944, while the sum is 41.

The spelling of 21363373490 in words is "twenty-one billion, three hundred sixty-three million, three hundred seventy-three thousand, four hundred ninety".