82390813451 has 2 divisors, whose sum is σ = 82390813452. Its totient is φ = 82390813450.

The previous prime is 82390813441. The next prime is 82390813499. The reversal of 82390813451 is 15431809328.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82390813451 - 2¹⁴ = 82390797067 is a prime.

It is a super-2 number, since 2×82390813451² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82390813441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41195406725 + 41195406726.

It is an arithmetic number, because the mean of its divisors is an integer number (41195406726).

Almost surely, 2^82390813451 is an apocalyptic number.

82390813451 is a deficient number, since it is larger than the sum of its proper divisors (1).

82390813451 is an equidigital number, since it uses as much as digits as its factorization.

82390813451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 82390813451 in words is "eighty-two billion, three hundred ninety million, eight hundred thirteen thousand, four hundred fifty-one".