83121332271407 has 16 divisors (see below), whose sum is σ = 87842544860160. Its totient is φ = 78435370978272.

The previous prime is 83121332271371. The next prime is 83121332271569. The reversal of 83121332271407 is 70417223312138.

It is a cyclic number.

It is not a de Polignac number, because 83121332271407 - 2²⁶ = 83121265162543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83121332471407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3581963 + ... + 13381820.

It is an arithmetic number, because the mean of its divisors is an integer number (5490159053760).

Almost surely, 2^{83121332271407} is an apocalyptic number.

83121332271407 is a deficient number, since it is larger than the sum of its proper divisors (4721212588753).

83121332271407 is a wasteful number, since it uses less digits than its factorization.

83121332271407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16964822.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 83121332271407 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred seventy-one thousand, four hundred seven".