83121608675501 has 16 divisors (see below), whose sum is σ = 91920857529600. Its totient is φ = 74529495889920.

The previous prime is 83121608675473. The next prime is 83121608675549. The reversal of 83121608675501 is 10557680612138.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83121608675501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83121608675561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239762381 + ... + 240108813.

It is an arithmetic number, because the mean of its divisors is an integer number (5745053595600).

Almost surely, 2^{83121608675501} is an apocalyptic number.

It is an amenable number.

83121608675501 is a deficient number, since it is larger than the sum of its proper divisors (8799248854099).

83121608675501 is a wasteful number, since it uses less digits than its factorization.

83121608675501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645316.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 83121608675501 in words is "eighty-three trillion, one hundred twenty-one billion, six hundred eight million, six hundred seventy-five thousand, five hundred one".