499812978020728 has 48 divisors (see below), whose sum is σ = 995529403670400. Its totient is φ = 235203530311680.

The previous prime is 499812978020663. The next prime is 499812978020731. The reversal of 499812978020728 is 827020879218994.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218709033 + ... + 220982503.

It is an arithmetic number, because the mean of its divisors is an integer number (20740195909800).

Almost surely, 2^{499812978020728} is an apocalyptic number.

It is an amenable number.

499812978020728 is a deficient number, since it is larger than the sum of its proper divisors (495716425649672).

499812978020728 is a wasteful number, since it uses less digits than its factorization.

499812978020728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368600 (or 2368579 counting only the distinct ones).

The product of its (nonzero) digits is 585252864, while the sum is 76.

The spelling of 499812978020728 in words is "four hundred ninety-nine trillion, eight hundred twelve billion, nine hundred seventy-eight million, twenty thousand, seven hundred twenty-eight".