21577752062 has 4 divisors (see below), whose sum is σ = 32366628096. Its totient is φ = 10788876030.

The previous prime is 21577752047. The next prime is 21577752073. The reversal of 21577752062 is 26025777512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5394438014 + ... + 5394438017.

It is an arithmetic number, because the mean of its divisors is an integer number (8091657024).

Almost surely, 2^21577752062 is an apocalyptic number.

21577752062 is a deficient number, since it is larger than the sum of its proper divisors (10788876034).

21577752062 is a wasteful number, since it uses less digits than its factorization.

21577752062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788876033.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 21577752062 in words is "twenty-one billion, five hundred seventy-seven million, seven hundred fifty-two thousand, sixty-two".