511149247728 has 80 divisors (see below), whose sum is σ = 1574720687616. Its totient is φ = 139692960000.

The previous prime is 511149247673. The next prime is 511149247769. The reversal of 511149247728 is 827742941115.

It is a super-2 number, since 2×511149247728² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33063523 + ... + 33078978.

Almost surely, 2^511149247728 is an apocalyptic number.

It is an amenable number.

511149247728 is an abundant number, since it is smaller than the sum of its proper divisors (1063571439888).

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

511149247728 is a wasteful number, since it uses less digits than its factorization.

511149247728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66142542 (or 66142536 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The spelling of 511149247728 in words is "five hundred eleven billion, one hundred forty-nine million, two hundred forty-seven thousand, seven hundred twenty-eight".