513538156956 has 24 divisors (see below), whose sum is σ = 1307188036224. Its totient is φ = 155617623280.

The previous prime is 513538156933. The next prime is 513538156973. The reversal of 513538156956 is 659651835315.

It is a junction number, because it is equal to n+sod(n) for n = 513538156896 and 513538156905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1945220160 + ... + 1945220423.

It is an arithmetic number, because the mean of its divisors is an integer number (54466168176).

Almost surely, 2^513538156956 is an apocalyptic number.

It is an amenable number.

513538156956 is an abundant number, since it is smaller than the sum of its proper divisors (793649879268).

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

513538156956 is a wasteful number, since it uses less digits than its factorization.

513538156956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890440601 (or 3890440599 counting only the distinct ones).

The product of its digits is 14580000, while the sum is 57.

The spelling of 513538156956 in words is "five hundred thirteen billion, five hundred thirty-eight million, one hundred fifty-six thousand, nine hundred fifty-six".