1315641579798 has 128 divisors (see below), whose sum is σ = 3256552857600. Its totient is φ = 345051850752.

The previous prime is 1315641579781. The next prime is 1315641579799. The reversal of 1315641579798 is 8979751465131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315641579799) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122848468 + ... + 122859176.

It is an arithmetic number, because the mean of its divisors is an integer number (25441819200).

Almost surely, 2^{1315641579798} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315641579798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628276428800).

1315641579798 is an abundant number, since it is smaller than the sum of its proper divisors (1940911277802).

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

1315641579798 is a wasteful number, since it uses less digits than its factorization.

1315641579798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11966.

The product of its digits is 57153600, while the sum is 66.

The spelling of 1315641579798 in words is "one trillion, three hundred fifteen billion, six hundred forty-one million, five hundred seventy-nine thousand, seven hundred ninety-eight".