515940222798 has 144 divisors (see below), whose sum is σ = 1527719474736. Its totient is φ = 123701921280.

The previous prime is 515940222769. The next prime is 515940222827. The reversal of 515940222798 is 897222049515.

515940222798 is a `hidden beast` number, since 5 + 1 + 5 + 9 + 402 + 227 + 9 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (515940222769) and next prime (515940222827).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1919211 + ... + 2171462.

It is an arithmetic number, because the mean of its divisors is an integer number (10609163019).

Almost surely, 2^515940222798 is an apocalyptic number.

515940222798 is an abundant number, since it is smaller than the sum of its proper divisors (1011779251938).

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

515940222798 is a wasteful number, since it uses less digits than its factorization.

515940222798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090719 (or 4090709 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 515940222798 in words is "five hundred fifteen billion, nine hundred forty million, two hundred twenty-two thousand, seven hundred ninety-eight".