3966587992653 has 48 divisors (see below), whose sum is σ = 6557629329216. Its totient is φ = 2102276954880.

The previous prime is 3966587992649. The next prime is 3966587992673. The reversal of 3966587992653 is 3562997856693.

It is a happy number.

It is not a de Polignac number, because 3966587992653 - 2² = 3966587992649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966587992673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12651400 + ... + 12961137.

It is an arithmetic number, because the mean of its divisors is an integer number (136617277692).

Almost surely, 2^{3966587992653} is an apocalyptic number.

3966587992653 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3966587992653 is a deficient number, since it is larger than the sum of its proper divisors (2591041336563).

3966587992653 is a wasteful number, since it uses less digits than its factorization.

3966587992653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25612602 (or 25612583 counting only the distinct ones).

The product of its digits is 3968092800, while the sum is 78.

The spelling of 3966587992653 in words is "three trillion, nine hundred sixty-six billion, five hundred eighty-seven million, nine hundred ninety-two thousand, six hundred fifty-three".