513307396820 has 48 divisors (see below), whose sum is σ = 1134761745600. Its totient is φ = 194502389760.

The previous prime is 513307396817. The next prime is 513307396841. The reversal of 513307396820 is 28693703315.

It is a super-2 number, since 2×513307396820² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 6274580 + ... + 6355860.

It is an arithmetic number, because the mean of its divisors is an integer number (23640869700).

Almost surely, 2^513307396820 is an apocalyptic number.

It is an amenable number.

513307396820 is an abundant number, since it is smaller than the sum of its proper divisors (621454348780).

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

513307396820 is a wasteful number, since it uses less digits than its factorization.

513307396820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97928 (or 97926 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 513307396820 in words is "five hundred thirteen billion, three hundred seven million, three hundred ninety-six thousand, eight hundred twenty".