515023421309975 has 24 divisors (see below), whose sum is σ = 676328020883568. Its totient is φ = 387706318272000.

The previous prime is 515023421309959. The next prime is 515023421310059. The reversal of 515023421309975 is 579903124320515.

It is not a de Polignac number, because 515023421309975 - 2⁴ = 515023421309959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 515023421309975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116614649 + ... + 120950498.

It is an arithmetic number, because the mean of its divisors is an integer number (28180334203482).

Almost surely, 2^{515023421309975} is an apocalyptic number.

515023421309975 is a deficient number, since it is larger than the sum of its proper divisors (161304599573593).

515023421309975 is a wasteful number, since it uses less digits than its factorization.

515023421309975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237570275 (or 237570270 counting only the distinct ones).

The product of its (nonzero) digits is 10206000, while the sum is 56.

The spelling of 515023421309975 in words is "five hundred fifteen trillion, twenty-three billion, four hundred twenty-one million, three hundred nine thousand, nine hundred seventy-five".