513536425540 has 24 divisors (see below), whose sum is σ = 1078474266072. Its totient is φ = 205405470720.

The previous prime is 513536425531. The next prime is 513536425543. The reversal of 513536425540 is 45524635315.

It can be written as a sum of positive squares in 4 ways, for example, as 116364218884 + 397172206656 = 341122^2 + 630216^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (513536425543) 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, 96379 + ... + 1018018.

It is an arithmetic number, because the mean of its divisors is an integer number (44936427753).

Almost surely, 2^513536425540 is an apocalyptic number.

It is an amenable number.

513536425540 is an abundant number, since it is smaller than the sum of its proper divisors (564937840532).

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

513536425540 is a wasteful number, since it uses less digits than its factorization.

513536425540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137447 (or 1137445 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 513536425540 in words is "five hundred thirteen billion, five hundred thirty-six million, four hundred twenty-five thousand, five hundred forty".