512542155140 has 48 divisors (see below), whose sum is σ = 1083116893824. Its totient is φ = 203728761600.

The previous prime is 512542155137. The next prime is 512542155199. The reversal of 512542155140 is 41551245215.

It is a self number, because there is not a number n which added to its sum of digits gives 512542155140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2636480 + ... + 2824200.

It is an arithmetic number, because the mean of its divisors is an integer number (22564935288).

Almost surely, 2^512542155140 is an apocalyptic number.

It is an amenable number.

512542155140 is an abundant number, since it is smaller than the sum of its proper divisors (570574738684).

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

512542155140 is a wasteful number, since it uses less digits than its factorization.

512542155140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188588 (or 188586 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 512542155140 in words is "five hundred twelve billion, five hundred forty-two million, one hundred fifty-five thousand, one hundred forty".