8520100078 has 16 divisors (see below), whose sum is σ = 15077044224. Its totient is φ = 3533681880.

The previous prime is 8520100073. The next prime is 8520100097. The reversal of 8520100078 is 8700010258.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8520100073) 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, 9815350 + ... + 9816217.

It is an arithmetic number, because the mean of its divisors is an integer number (942315264).

Almost surely, 2^8520100078 is an apocalyptic number.

8520100078 is a deficient number, since it is larger than the sum of its proper divisors (6556944146).

8520100078 is a wasteful number, since it uses less digits than its factorization.

8520100078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19631607.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 8520100078 is about 92304.3881838778. The cubic root of 8520100078 is about 2042.4349431629.

The spelling of 8520100078 in words is "eight billion, five hundred twenty million, one hundred thousand, seventy-eight".