21302619352 has 32 divisors (see below), whose sum is σ = 48333676320. Its totient is φ = 8592652800.

The previous prime is 21302619347. The next prime is 21302619391. The reversal of 21302619352 is 25391620312.

It is a Harshad number since it is a multiple of its sum of digits (34).

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 7 ways as a sum of consecutive naturals, for example, 11187399 + ... + 11189302.

It is an arithmetic number, because the mean of its divisors is an integer number (1510427385).

Almost surely, 2^21302619352 is an apocalyptic number.

It is an amenable number.

21302619352 is an abundant number, since it is smaller than the sum of its proper divisors (27031056968).

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

21302619352 is a wasteful number, since it uses less digits than its factorization.

21302619352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22376731 (or 22376727 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 21302619352 in words is "twenty-one billion, three hundred two million, six hundred nineteen thousand, three hundred fifty-two".