68278430372 has 48 divisors (see below), whose sum is σ = 126017912832. Its totient is φ = 32328253440.

The previous prime is 68278430359. The next prime is 68278430393. The reversal of 68278430372 is 27303487286.

It is a self number, because there is not a number n which added to its sum of digits gives 68278430372.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119908 + ... + 1179300.

It is an arithmetic number, because the mean of its divisors is an integer number (2625373184).

Almost surely, 2^68278430372 is an apocalyptic number.

68278430372 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

68278430372 is a deficient number, since it is larger than the sum of its proper divisors (57739482460).

68278430372 is a wasteful number, since it uses less digits than its factorization.

68278430372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59628 (or 59626 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 68278430372 in words is "sixty-eight billion, two hundred seventy-eight million, four hundred thirty thousand, three hundred seventy-two".