21752948382 has 32 divisors (see below), whose sum is σ = 47470302720. Its totient is φ = 6590507520.

The previous prime is 21752948377. The next prime is 21752948407. The reversal of 21752948382 is 28384925712.

It is a congruent number.

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, 337963 + ... + 397145.

It is an arithmetic number, because the mean of its divisors is an integer number (1483446960).

Almost surely, 2^21752948382 is an apocalyptic number.

21752948382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21752948382 is an abundant number, since it is smaller than the sum of its proper divisors (25717354338).

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

21752948382 is a wasteful number, since it uses less digits than its factorization.

21752948382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64768.

The product of its digits is 1935360, while the sum is 51.

The spelling of 21752948382 in words is "twenty-one billion, seven hundred fifty-two million, nine hundred forty-eight thousand, three hundred eighty-two".