7691138055 has 32 divisors (see below), whose sum is σ = 13677465600. Its totient is φ = 4100641056.

The previous prime is 7691138033. The next prime is 7691138071. The reversal of 7691138055 is 5508311967.

It is a happy number.

It is not a de Polignac number, because 7691138055 - 2⁹ = 7691137543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7691138055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 543682 + ... + 557648.

It is an arithmetic number, because the mean of its divisors is an integer number (427420800).

Almost surely, 2^7691138055 is an apocalyptic number.

7691138055 is a deficient number, since it is larger than the sum of its proper divisors (5986327545).

7691138055 is a wasteful number, since it uses less digits than its factorization.

7691138055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18060 (or 18054 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 7691138055 is about 87699.1337186406. The cubic root of 7691138055 is about 1973.9229767343.

The spelling of 7691138055 in words is "seven billion, six hundred ninety-one million, one hundred thirty-eight thousand, fifty-five".