78298254790 has 64 divisors (see below), whose sum is σ = 162525585024. Its totient is φ = 26603716608.

The previous prime is 78298254787. The next prime is 78298254829. The reversal of 78298254790 is 9745289287.

It is a super-2 number, since 2×78298254790² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3532984 + ... + 3555076.

It is an arithmetic number, because the mean of its divisors is an integer number (2539462266).

Almost surely, 2^78298254790 is an apocalyptic number.

78298254790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78298254790 is an abundant number, since it is smaller than the sum of its proper divisors (84227330234).

78298254790 is a wasteful number, since it uses less digits than its factorization.

78298254790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22561.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 78298254790 in words is "seventy-eight billion, two hundred ninety-eight million, two hundred fifty-four thousand, seven hundred ninety".