78298306450 has 48 divisors (see below), whose sum is σ = 179242902720. Its totient is φ = 24780121920.

The previous prime is 78298306433. The next prime is 78298306511. The reversal of 78298306450 is 5460389287.

It is a super-2 number, since 2×78298306450² (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 (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8599660 + ... + 8608759.

It is an arithmetic number, because the mean of its divisors is an integer number (3734227140).

Almost surely, 2^78298306450 is an apocalyptic number.

78298306450 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78298306450 is an abundant number, since it is smaller than the sum of its proper divisors (100944596270).

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

78298306450 is a wasteful number, since it uses less digits than its factorization.

78298306450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17208451 (or 17208446 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 78298306450 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred six thousand, four hundred fifty".