82796715621 has 8 divisors (see below), whose sum is σ = 122661800960. Its totient is φ = 55197810396.

The previous prime is 82796715601. The next prime is 82796715641. The reversal of 82796715621 is 12651769728.

82796715621 is a `hidden beast` number, since 8 + 2 + 7 + 9 + 6 + 7 + 1 + 5 + 621 = 666.

It is an interprime number because it is at equal distance from previous prime (82796715601) and next prime (82796715641).

It is not a de Polignac number, because 82796715621 - 2¹⁸ = 82796453477 is a prime.

It is a super-2 number, since 2×82796715621² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82796715601) 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, 1533272485 + ... + 1533272538.

It is an arithmetic number, because the mean of its divisors is an integer number (15332725120).

Almost surely, 2^82796715621 is an apocalyptic number.

It is an amenable number.

82796715621 is a deficient number, since it is larger than the sum of its proper divisors (39865085339).

82796715621 is a wasteful number, since it uses less digits than its factorization.

82796715621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066545032 (or 3066545026 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 82796715621 in words is "eighty-two billion, seven hundred ninety-six million, seven hundred fifteen thousand, six hundred twenty-one".