21862790360 has 16 divisors (see below), whose sum is σ = 49191278400. Its totient is φ = 8745116128.

The previous prime is 21862790329. The next prime is 21862790423. The reversal of 21862790360 is 6309726812.

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 3 ways as a sum of consecutive naturals, for example, 273284840 + ... + 273284919.

It is an arithmetic number, because the mean of its divisors is an integer number (3074454900).

Almost surely, 2^21862790360 is an apocalyptic number.

21862790360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21862790360 is an abundant number, since it is smaller than the sum of its proper divisors (27328488040).

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

21862790360 is a wasteful number, since it uses less digits than its factorization.

21862790360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546569770 (or 546569766 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 21862790360 in words is "twenty-one billion, eight hundred sixty-two million, seven hundred ninety thousand, three hundred sixty".