82735779887 has 4 divisors (see below), whose sum is σ = 83783068320. Its totient is φ = 81688491456.

The previous prime is 82735779881. The next prime is 82735779901. The reversal of 82735779887 is 78897753728.

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 82735779887 - 2⁸ = 82735779631 is a prime.

It is a super-2 number, since 2×82735779887² (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 82735779887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82735779881) 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, 523644098 + ... + 523644255.

It is an arithmetic number, because the mean of its divisors is an integer number (20945767080).

Almost surely, 2^82735779887 is an apocalyptic number.

82735779887 is a deficient number, since it is larger than the sum of its proper divisors (1047288433).

82735779887 is a wasteful number, since it uses less digits than its factorization.

82735779887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047288432.

The product of its digits is 331914240, while the sum is 71.

The spelling of 82735779887 in words is "eighty-two billion, seven hundred thirty-five million, seven hundred seventy-nine thousand, eight hundred eighty-seven".