21733276747 has 16 divisors (see below), whose sum is σ = 26753863360. Its totient is φ = 17192207232.

The previous prime is 21733276739. The next prime is 21733276759. The reversal of 21733276747 is 74767233712.

It is a cyclic number.

It is not a de Polignac number, because 21733276747 - 2³ = 21733276739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21733276747.

It is not an unprimeable number, because it can be changed into a prime (21733276727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513733 + ... + 554425.

It is an arithmetic number, because the mean of its divisors is an integer number (1672116460).

Almost surely, 2^21733276747 is an apocalyptic number.

21733276747 is a deficient number, since it is larger than the sum of its proper divisors (5020586613).

21733276747 is a wasteful number, since it uses less digits than its factorization.

21733276747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46582.

The product of its digits is 2074464, while the sum is 49.

The spelling of 21733276747 in words is "twenty-one billion, seven hundred thirty-three million, two hundred seventy-six thousand, seven hundred forty-seven".