7513213134640 has 20 divisors (see below), whose sum is σ = 17468220538224. Its totient is φ = 3005285253824.

The previous prime is 7513213134607. The next prime is 7513213134659. The reversal of 7513213134640 is 464313123157.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7513213134593 and 7513213134602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46957582012 + ... + 46957582171.

Almost surely, 2^{7513213134640} is an apocalyptic number.

It is an amenable number.

7513213134640 is an abundant number, since it is smaller than the sum of its proper divisors (9955007403584).

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

7513213134640 is a wasteful number, since it uses less digits than its factorization.

7513213134640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93915164196 (or 93915164190 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 7513213134640 its reverse (464313123157), we get a palindrome (7977526257797).

The spelling of 7513213134640 in words is "seven trillion, five hundred thirteen billion, two hundred thirteen million, one hundred thirty-four thousand, six hundred forty".