78574798850 has 24 divisors (see below), whose sum is σ = 146160425268. Its totient is φ = 31427489600.

The previous prime is 78574798837. The next prime is 78574798873. The reversal of 78574798850 is 5889747587.

It can be written as a sum of positive squares in 6 ways, for example, as 41750340241 + 36824458609 = 204329^2 + 191897^2 .

It is a super-2 number, since 2×78574798850² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 682460 + ... + 789240.

Almost surely, 2^78574798850 is an apocalyptic number.

78574798850 is a deficient number, since it is larger than the sum of its proper divisors (67585626418).

78574798850 is a wasteful number, since it uses less digits than its factorization.

78574798850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121510 (or 121505 counting only the distinct ones).

The product of its (nonzero) digits is 158054400, while the sum is 68.

The spelling of 78574798850 in words is "seventy-eight billion, five hundred seventy-four million, seven hundred ninety-eight thousand, eight hundred fifty".