7716536072661 has 32 divisors (see below), whose sum is σ = 11088590929920. Its totient is φ = 4745023360704.

The previous prime is 7716536072639. The next prime is 7716536072689. The reversal of 7716536072661 is 1662706356177.

It is a happy number.

It is not a de Polignac number, because 7716536072661 - 2¹¹ = 7716536070613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7716536072611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316771600 + ... + 316795958.

It is an arithmetic number, because the mean of its divisors is an integer number (346518466560).

Almost surely, 2^{7716536072661} is an apocalyptic number.

It is an amenable number.

7716536072661 is a deficient number, since it is larger than the sum of its proper divisors (3372054857259).

7716536072661 is a wasteful number, since it uses less digits than its factorization.

7716536072661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30225.

The product of its (nonzero) digits is 13335840, while the sum is 57.

The spelling of 7716536072661 in words is "seven trillion, seven hundred sixteen billion, five hundred thirty-six million, seventy-two thousand, six hundred sixty-one".