83121613450756 has 12 divisors (see below), whose sum is σ = 145463015548368. Its totient is φ = 41560751865512.

The previous prime is 83121613450747. The next prime is 83121613450783. The reversal of 83121613450756 is 65705431612138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10206106 + ... + 16444081.

It is an arithmetic number, because the mean of its divisors is an integer number (12121917962364).

Almost surely, 2^{83121613450756} is an apocalyptic number.

It is an amenable number.

83121613450756 is a deficient number, since it is larger than the sum of its proper divisors (62341402097612).

83121613450756 is a wasteful number, since it uses less digits than its factorization.

83121613450756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27429938 (or 27429936 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 83121613450756 in words is "eighty-three trillion, one hundred twenty-one billion, six hundred thirteen million, four hundred fifty thousand, seven hundred fifty-six".