7158007878 has 32 divisors (see below), whose sum is σ = 16760217600. Its totient is φ = 1995263040.

The previous prime is 7158007877. The next prime is 7158007903. The reversal of 7158007878 is 8787008517.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7158007878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7158007877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2076678 + ... + 2080121.

It is an arithmetic number, because the mean of its divisors is an integer number (523756800).

Almost surely, 2^7158007878 is an apocalyptic number.

7158007878 is an abundant number, since it is smaller than the sum of its proper divisors (9602209722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7158007878 is a wasteful number, since it uses less digits than its factorization.

7158007878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156852.

The product of its (nonzero) digits is 878080, while the sum is 51.

The square root of 7158007878 is about 84605.0109508887. The cubic root of 7158007878 is about 1927.2174707732.

The spelling of 7158007878 in words is "seven billion, one hundred fifty-eight million, seven thousand, eight hundred seventy-eight".