78810010100 has 36 divisors (see below), whose sum is σ = 171403862784. Its totient is φ = 31452826080.

The previous prime is 78810010049. The next prime is 78810010177. The reversal of 78810010100 is 101001887.

It is a super-2 number, since 2×78810010100² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78810010100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 845204 + ... + 933803.

Almost surely, 2^78810010100 is an apocalyptic number.

It is an amenable number.

78810010100 is an abundant number, since it is smaller than the sum of its proper divisors (92593852684).

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

78810010100 is a wasteful number, since it uses less digits than its factorization.

78810010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779464 (or 1779457 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 26.

Adding to 78810010100 its reverse (101001887), we get a palindrome (78911011987).

The spelling of 78810010100 in words is "seventy-eight billion, eight hundred ten million, ten thousand, one hundred".