83121348337665 has 256 divisors, whose sum is σ = 157133842735104. Its totient is φ = 37111340851200.

The previous prime is 83121348337663. The next prime is 83121348337697. The reversal of 83121348337665 is 56673384312138.

It is not a de Polignac number, because 83121348337665 - 2¹ = 83121348337663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83121348337599 and 83121348337608.

It is not an unprimeable number, because it can be changed into a prime (83121348337661) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 5125560637 + ... + 5125576853.

It is an arithmetic number, because the mean of its divisors is an integer number (613804073184).

Almost surely, 2^{83121348337665} is an apocalyptic number.

It is an amenable number.

83121348337665 is a deficient number, since it is larger than the sum of its proper divisors (74012494397439).

83121348337665 is a wasteful number, since it uses less digits than its factorization.

83121348337665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16680.

The product of its digits is 52254720, while the sum is 60.

The spelling of 83121348337665 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred forty-eight million, three hundred thirty-seven thousand, six hundred sixty-five".