36664032220731 has 12 divisors (see below), whose sum is σ = 53078704289208. Its totient is φ = 24387512776224.

The previous prime is 36664032220727. The next prime is 36664032220801. The reversal of 36664032220731 is 13702223046663.

It is not a de Polignac number, because 36664032220731 - 2² = 36664032220727 is a prime.

It is a super-2 number, since 2×36664032220731² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36664032220721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4597943370 + ... + 4597951343.

It is an arithmetic number, because the mean of its divisors is an integer number (4423225357434).

Almost surely, 2^{36664032220731} is an apocalyptic number.

36664032220731 is a deficient number, since it is larger than the sum of its proper divisors (16414672068477).

36664032220731 is a wasteful number, since it uses less digits than its factorization.

36664032220731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9195895162 (or 9195895159 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 36664032220731 in words is "thirty-six trillion, six hundred sixty-four billion, thirty-two million, two hundred twenty thousand, seven hundred thirty-one".