78620373250 has 16 divisors (see below), whose sum is σ = 147177339192. Its totient is φ = 31448149200.

The previous prime is 78620373217. The next prime is 78620373301. The reversal of 78620373250 is 5237302687.

It can be written as a sum of positive squares in 4 ways, for example, as 15099740161 + 63520633089 = 122881^2 + 252033^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78620373197 and 78620373206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157240497 + ... + 157240996.

Almost surely, 2^78620373250 is an apocalyptic number.

78620373250 is a deficient number, since it is larger than the sum of its proper divisors (68556965942).

78620373250 is a wasteful number, since it uses less digits than its factorization.

78620373250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314481510 (or 314481500 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 78620373250 in words is "seventy-eight billion, six hundred twenty million, three hundred seventy-three thousand, two hundred fifty".