511215036345 has 80 divisors (see below), whose sum is σ = 995947795920. Its totient is φ = 249365869056.

The previous prime is 511215036341. The next prime is 511215036383. The reversal of 511215036345 is 543630512115.

511215036345 is a `hidden beast` number, since 5 + 1 + 1 + 2 + 15 + 0 + 3 + 634 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1024832169 + 510190204176 = 32013^2 + 714276^2 .

It is not a de Polignac number, because 511215036345 - 2² = 511215036341 is a prime.

It is a super-2 number, since 2×511215036345² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511215036341) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 128487 + ... + 1019283.

It is an arithmetic number, because the mean of its divisors is an integer number (12449347449).

Almost surely, 2^511215036345 is an apocalyptic number.

It is an amenable number.

511215036345 is a deficient number, since it is larger than the sum of its proper divisors (484732759575).

511215036345 is a wasteful number, since it uses less digits than its factorization.

511215036345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890936 (or 890927 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 511215036345 in words is "five hundred eleven billion, two hundred fifteen million, thirty-six thousand, three hundred forty-five".