39690664495 has 8 divisors (see below), whose sum is σ = 49699614816. Its totient is φ = 30371986656.

The previous prime is 39690664469. The next prime is 39690664499. The reversal of 39690664495 is 59446609693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39690664495 - 2¹¹ = 39690662447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39690664499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172567992 + ... + 172568221.

It is an arithmetic number, because the mean of its divisors is an integer number (6212451852).

Almost surely, 2^39690664495 is an apocalyptic number.

39690664495 is a deficient number, since it is larger than the sum of its proper divisors (10008950321).

39690664495 is a wasteful number, since it uses less digits than its factorization.

39690664495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345136241.

The product of its (nonzero) digits is 37791360, while the sum is 61.

The spelling of 39690664495 in words is "thirty-nine billion, six hundred ninety million, six hundred sixty-four thousand, four hundred ninety-five".