78000000087 has 16 divisors (see below), whose sum is σ = 105012311040. Its totient is φ = 51496250400.

The previous prime is 78000000077. The next prime is 78000000101.

It is a happy number.

78000000087 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-78000000087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78000000007) 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, 170739 + ... + 430292.

It is an arithmetic number, because the mean of its divisors is an integer number (6563269440).

Almost surely, 2^78000000087 is an apocalyptic number.

78000000087 is a deficient number, since it is larger than the sum of its proper divisors (27012310953).

78000000087 is a wasteful number, since it uses less digits than its factorization.

78000000087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601454.

The product of its (nonzero) digits is 3136, while the sum is 30.

It can be divided in two parts, 780000000 and 87, that added together give a palindrome (780000087).

The spelling of 78000000087 in words is "seventy-eight billion, eighty-seven", and thus it is an aban number and an uban number.