21772655062 has 4 divisors (see below), whose sum is σ = 32658982596. Its totient is φ = 10886327530.

The previous prime is 21772655059. The next prime is 21772655087. The reversal of 21772655062 is 26055627712.

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, 5443163764 + ... + 5443163767.

It is an arithmetic number, because the mean of its divisors is an integer number (8164745649).

Almost surely, 2^21772655062 is an apocalyptic number.

21772655062 is a deficient number, since it is larger than the sum of its proper divisors (10886327534).

21772655062 is a wasteful number, since it uses less digits than its factorization.

21772655062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10886327533.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 21772655062 in words is "twenty-one billion, seven hundred seventy-two million, six hundred fifty-five thousand, sixty-two".