83123620376661 has 8 divisors (see below), whose sum is σ = 123146104261760. Its totient is φ = 55415746917756.

The previous prime is 83123620376659. The next prime is 83123620376717. The reversal of 83123620376661 is 16667302632138.

It is not a de Polignac number, because 83123620376661 - 2¹ = 83123620376659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83123620376598 and 83123620376607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83123620376761) 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, 1539326303245 + ... + 1539326303298.

It is an arithmetic number, because the mean of its divisors is an integer number (15393263032720).

Almost surely, 2^{83123620376661} is an apocalyptic number.

It is an amenable number.

83123620376661 is a deficient number, since it is larger than the sum of its proper divisors (40022483885099).

83123620376661 is a wasteful number, since it uses less digits than its factorization.

83123620376661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078652606552 (or 3078652606546 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 83123620376661 in words is "eighty-three trillion, one hundred twenty-three billion, six hundred twenty million, three hundred seventy-six thousand, six hundred sixty-one".