82451104919 has 4 divisors (see below), whose sum is σ = 84462107520. Its totient is φ = 80440102320.

The previous prime is 82451104913. The next prime is 82451104987. The reversal of 82451104919 is 91940115428.

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

It is a cyclic number.

It is not a de Polignac number, because 82451104919 - 2⁸ = 82451104663 is a prime.

It is a super-2 number, since 2×82451104919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82451104919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82451104913) 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, 1005501239 + ... + 1005501320.

It is an arithmetic number, because the mean of its divisors is an integer number (21115526880).

Almost surely, 2^82451104919 is an apocalyptic number.

82451104919 is a deficient number, since it is larger than the sum of its proper divisors (2011002601).

82451104919 is a wasteful number, since it uses less digits than its factorization.

82451104919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011002600.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 82451104919 in words is "eighty-two billion, four hundred fifty-one million, one hundred four thousand, nine hundred nineteen".