82978325511 has 8 divisors (see below), whose sum is σ = 110639122944. Its totient is φ = 55318205880.

The previous prime is 82978325467. The next prime is 82978325513. The reversal of 82978325511 is 11552387928.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82978325511 - 2⁹ = 82978324999 is a prime.

It is a super-2 number, since 2×82978325511² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82978325513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310020 + ... + 511926.

It is an arithmetic number, because the mean of its divisors is an integer number (13829890368).

Almost surely, 2^82978325511 is an apocalyptic number.

82978325511 is a deficient number, since it is larger than the sum of its proper divisors (27660797433).

82978325511 is a wasteful number, since it uses less digits than its factorization.

82978325511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338901.

The product of its digits is 1209600, while the sum is 51.

The spelling of 82978325511 in words is "eighty-two billion, nine hundred seventy-eight million, three hundred twenty-five thousand, five hundred eleven".