82777552783 has 4 divisors (see below), whose sum is σ = 83581218448. Its totient is φ = 81973887120.

The previous prime is 82777552729. The next prime is 82777552829. The reversal of 82777552783 is 38725577728.

It is a happy number.

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-82777552783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82777352783) 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, 401832678 + ... + 401832883.

It is an arithmetic number, because the mean of its divisors is an integer number (20895304612).

Almost surely, 2^82777552783 is an apocalyptic number.

82777552783 is a deficient number, since it is larger than the sum of its proper divisors (803665665).

82777552783 is a wasteful number, since it uses less digits than its factorization.

82777552783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803665664.

The product of its digits is 46099200, while the sum is 61.

The spelling of 82777552783 in words is "eighty-two billion, seven hundred seventy-seven million, five hundred fifty-two thousand, seven hundred eighty-three".