82861391351 has 2 divisors, whose sum is σ = 82861391352. Its totient is φ = 82861391350.

The previous prime is 82861391329. The next prime is 82861391357. The reversal of 82861391351 is 15319316828.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82861391351 - 2²² = 82857197047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82861391296 and 82861391305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82861391357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41430695675 + 41430695676.

It is an arithmetic number, because the mean of its divisors is an integer number (41430695676).

Almost surely, 2^82861391351 is an apocalyptic number.

82861391351 is a deficient number, since it is larger than the sum of its proper divisors (1).

82861391351 is an equidigital number, since it uses as much as digits as its factorization.

82861391351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The spelling of 82861391351 in words is "eighty-two billion, eight hundred sixty-one million, three hundred ninety-one thousand, three hundred fifty-one".