511516136078540 has 48 divisors (see below), whose sum is σ = 1075158603412992. Its totient is φ = 204420810664896.

The previous prime is 511516136078509. The next prime is 511516136078543. The reversal of 511516136078540 is 45870631615115.

It is not an unprimeable number, because it can be changed into a prime (511516136078543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499275887 + ... + 500299353.

It is an arithmetic number, because the mean of its divisors is an integer number (22399137571104).

Almost surely, 2^{511516136078540} is an apocalyptic number.

It is an amenable number.

511516136078540 is an abundant number, since it is smaller than the sum of its proper divisors (563642467334452).

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

511516136078540 is a wasteful number, since it uses less digits than its factorization.

511516136078540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046126 (or 1046124 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 53.

The spelling of 511516136078540 in words is "five hundred eleven trillion, five hundred sixteen billion, one hundred thirty-six million, seventy-eight thousand, five hundred forty".