513151153640 has 32 divisors (see below), whose sum is σ = 1158016209480. Its totient is φ = 204651374592.

The previous prime is 513151153631. The next prime is 513151153693. The reversal of 513151153640 is 46351151315.

It can be written as a sum of positive squares in 4 ways, for example, as 380918558596 + 132232595044 = 617186^2 + 363638^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 513151153640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19020317 + ... + 19047276.

Almost surely, 2^513151153640 is an apocalyptic number.

It is an amenable number.

513151153640 is an abundant number, since it is smaller than the sum of its proper divisors (644865055840).

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

513151153640 is a wasteful number, since it uses less digits than its factorization.

513151153640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38067941 (or 38067937 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 513151153640 in words is "five hundred thirteen billion, one hundred fifty-one million, one hundred fifty-three thousand, six hundred forty".