511125118287864 has 128 divisors (see below), whose sum is σ = 1363600465920000. Its totient is φ = 159381870566400.

The previous prime is 511125118287853. The next prime is 511125118287913. The reversal of 511125118287864 is 468782811521115.

It is a happy number.

It is a super-2 number, since 2×511125118287864² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511125118287798 and 511125118287807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73537464 + ... + 80187335.

It is an arithmetic number, because the mean of its divisors is an integer number (10653128640000).

Almost surely, 2^{511125118287864} is an apocalyptic number.

It is an amenable number.

511125118287864 is an abundant number, since it is smaller than the sum of its proper divisors (852475347632136).

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

511125118287864 is a wasteful number, since it uses less digits than its factorization.

511125118287864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153724989 (or 153724985 counting only the distinct ones).

The product of its digits is 8601600, while the sum is 60.

The spelling of 511125118287864 in words is "five hundred eleven trillion, one hundred twenty-five billion, one hundred eighteen million, two hundred eighty-seven thousand, eight hundred sixty-four".