13120787658 has 16 divisors (see below), whose sum is σ = 28627173216. Its totient is φ = 3975996240.

The previous prime is 13120787653. The next prime is 13120787681. The reversal of 13120787658 is 85678702131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13120787653) 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, 99399841 + ... + 99399972.

It is an arithmetic number, because the mean of its divisors is an integer number (1789198326).

Almost surely, 2^13120787658 is an apocalyptic number.

13120787658 is an abundant number, since it is smaller than the sum of its proper divisors (15506385558).

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

13120787658 is a wasteful number, since it uses less digits than its factorization.

13120787658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198799829.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 13120787658 in words is "thirteen billion, one hundred twenty million, seven hundred eighty-seven thousand, six hundred fifty-eight".