36722547437721 has 4 divisors (see below), whose sum is σ = 48963396583632. Its totient is φ = 24481698291812.

The previous prime is 36722547437711. The next prime is 36722547437767. The reversal of 36722547437721 is 12773474522763.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36722547437721 - 2⁵ = 36722547437689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36722547437711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6120424572951 + ... + 6120424572956.

It is an arithmetic number, because the mean of its divisors is an integer number (12240849145908).

Almost surely, 2^{36722547437721} is an apocalyptic number.

It is an amenable number.

36722547437721 is a deficient number, since it is larger than the sum of its proper divisors (12240849145911).

36722547437721 is a wasteful number, since it uses less digits than its factorization.

36722547437721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12240849145910.

The product of its digits is 82978560, while the sum is 60.

The spelling of 36722547437721 in words is "thirty-six trillion, seven hundred twenty-two billion, five hundred forty-seven million, four hundred thirty-seven thousand, seven hundred twenty-one".