21142750632 has 16 divisors (see below), whose sum is σ = 52856876640. Its totient is φ = 7047583536.

The previous prime is 21142750591. The next prime is 21142750661. The reversal of 21142750632 is 23605724112.

It is a junction number, because it is equal to n+sod(n) for n = 21142750593 and 21142750602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440473948 + ... + 440473995.

It is an arithmetic number, because the mean of its divisors is an integer number (3303554790).

Almost surely, 2^21142750632 is an apocalyptic number.

It is an amenable number.

21142750632 is an abundant number, since it is smaller than the sum of its proper divisors (31714126008).

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

21142750632 is a wasteful number, since it uses less digits than its factorization.

21142750632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880947952 (or 880947948 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 21142750632 in words is "twenty-one billion, one hundred forty-two million, seven hundred fifty thousand, six hundred thirty-two".