7813999055 has 8 divisors (see below), whose sum is σ = 9377307744. Its totient is φ = 6250860000.

The previous prime is 7813999019. The next prime is 7813999057. The reversal of 7813999055 is 5509993187.

7813999055 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7813999055 - 2⁶ = 7813998991 is a prime.

It is a super-2 number, since 2×7813999055² (a number of 21 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 (7813999057) 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, 106430 + ... + 164180.

It is an arithmetic number, because the mean of its divisors is an integer number (1172163468).

Almost surely, 2^7813999055 is an apocalyptic number.

7813999055 is a deficient number, since it is larger than the sum of its proper divisors (1563308689).

7813999055 is a wasteful number, since it uses less digits than its factorization.

7813999055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84817.

The product of its (nonzero) digits is 3061800, while the sum is 56.

The square root of 7813999055 is about 88396.8271772240. The cubic root of 7813999055 is about 1984.3782189230.

The spelling of 7813999055 in words is "seven billion, eight hundred thirteen million, nine hundred ninety-nine thousand, fifty-five".