813880078111 has 8 divisors (see below), whose sum is σ = 835520263424. Its totient is φ = 792363199320.

The previous prime is 813880078057. The next prime is 813880078147. The reversal of 813880078111 is 111870088318.

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

It is a cyclic number.

It is not a de Polignac number, because 813880078111 - 2²³ = 813871689503 is a prime.

It is a super-2 number, since 2×813880078111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813880078181) 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, 30813255 + ... + 30839656.

It is an arithmetic number, because the mean of its divisors is an integer number (104440032928).

Almost surely, 2^813880078111 is an apocalyptic number.

813880078111 is a deficient number, since it is larger than the sum of its proper divisors (21640185313).

813880078111 is a wasteful number, since it uses less digits than its factorization.

813880078111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61653261.

The product of its (nonzero) digits is 86016, while the sum is 46.

The spelling of 813880078111 in words is "eight hundred thirteen billion, eight hundred eighty million, seventy-eight thousand, one hundred eleven".