513511444045 has 8 divisors (see below), whose sum is σ = 616822044696. Its totient is φ = 410403614016.

The previous prime is 513511443953. The next prime is 513511444057. The reversal of 513511444045 is 540444115315.

It can be written as a sum of positive squares in 4 ways, for example, as 26416325961 + 487095118084 = 162531^2 + 697922^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513511444045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513511443995 and 513511444013.

It is a congruent number.

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, 50687082 + ... + 50697211.

It is an arithmetic number, because the mean of its divisors is an integer number (77102755587).

Almost surely, 2^513511444045 is an apocalyptic number.

It is an amenable number.

513511444045 is a deficient number, since it is larger than the sum of its proper divisors (103310600651).

513511444045 is a wasteful number, since it uses less digits than its factorization.

513511444045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101385311.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 513511444045 in words is "five hundred thirteen billion, five hundred eleven million, four hundred forty-four thousand, forty-five".