36721692164 has 6 divisors (see below), whose sum is σ = 64262961294. Its totient is φ = 18360846080.

The previous prime is 36721692121. The next prime is 36721692169. The reversal of 36721692164 is 46129612763.

It can be written as a sum of positive squares in only one way, i.e., 35464422400 + 1257269764 = 188320^2 + 35458^2 .

It is not an unprimeable number, because it can be changed into a prime (36721692169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4590211517 + ... + 4590211524.

It is an arithmetic number, because the mean of its divisors is an integer number (10710493549).

Almost surely, 2^36721692164 is an apocalyptic number.

It is an amenable number.

36721692164 is a deficient number, since it is larger than the sum of its proper divisors (27541269130).

36721692164 is a wasteful number, since it uses less digits than its factorization.

36721692164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180423045 (or 9180423043 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The spelling of 36721692164 in words is "thirty-six billion, seven hundred twenty-one million, six hundred ninety-two thousand, one hundred sixty-four".