21115714532 has 24 divisors (see below), whose sum is σ = 40316657472. Its totient is φ = 9596900000.

The previous prime is 21115714513. The next prime is 21115714541. The reversal of 21115714532 is 23541751112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420782 + ... + 468282.

It is an arithmetic number, because the mean of its divisors is an integer number (1679860728).

Almost surely, 2^21115714532 is an apocalyptic number.

21115714532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21115714532 is a deficient number, since it is larger than the sum of its proper divisors (19200942940).

21115714532 is a wasteful number, since it uses less digits than its factorization.

21115714532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57619 (or 57617 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The spelling of 21115714532 in words is "twenty-one billion, one hundred fifteen million, seven hundred fourteen thousand, five hundred thirty-two".