82785404151 has 24 divisors (see below), whose sum is σ = 123253038480. Its totient is φ = 53513260416.

The previous prime is 82785404147. The next prime is 82785404197. The reversal of 82785404151 is 15140458728.

It is not a de Polignac number, because 82785404151 - 2² = 82785404147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82785404097 and 82785404106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82785474151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 727696 + ... + 833733.

It is an arithmetic number, because the mean of its divisors is an integer number (5135543270).

Almost surely, 2^82785404151 is an apocalyptic number.

82785404151 is a deficient number, since it is larger than the sum of its proper divisors (40467634329).

82785404151 is a wasteful number, since it uses less digits than its factorization.

82785404151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561615 (or 1561612 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The spelling of 82785404151 in words is "eighty-two billion, seven hundred eighty-five million, four hundred four thousand, one hundred fifty-one".