13130977440 has 96 divisors (see below), whose sum is σ = 47271530880. Its totient is φ = 3001365504.

The previous prime is 13130977399. The next prime is 13130977511. The reversal of 13130977440 is 4477903131.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950655 + ... + 1957374.

It is an arithmetic number, because the mean of its divisors is an integer number (492411780).

Almost surely, 2^13130977440 is an apocalyptic number.

13130977440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13130977440 is an abundant number, since it is smaller than the sum of its proper divisors (34140553440).

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

13130977440 is a wasteful number, since it uses less digits than its factorization.

13130977440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908054 (or 3908046 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 13130977440 in words is "thirteen billion, one hundred thirty million, nine hundred seventy-seven thousand, four hundred forty".