82751865671431 has 4 divisors (see below), whose sum is σ = 90274762550664. Its totient is φ = 75228968792200.

The previous prime is 82751865671333. The next prime is 82751865671479. The reversal of 82751865671431 is 13417656815728.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82751865671431 is a prime.

It is a super-2 number, since 2×82751865671431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82751865678431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3761448439600 + ... + 3761448439621.

It is an arithmetic number, because the mean of its divisors is an integer number (22568690637666).

Almost surely, 2^{82751865671431} is an apocalyptic number.

82751865671431 is a deficient number, since it is larger than the sum of its proper divisors (7522896879233).

82751865671431 is a wasteful number, since it uses less digits than its factorization.

82751865671431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7522896879232.

The product of its digits is 67737600, while the sum is 64.

The spelling of 82751865671431 in words is "eighty-two trillion, seven hundred fifty-one billion, eight hundred sixty-five million, six hundred seventy-one thousand, four hundred thirty-one".