68278458780 has 72 divisors (see below), whose sum is σ = 236698661472. Its totient is φ = 15606504576.

The previous prime is 68278458751. The next prime is 68278458791. The reversal of 68278458780 is 8785487286.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27093367 + ... + 27095886.

Almost surely, 2^68278458780 is an apocalyptic number.

68278458780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68278458780 is an abundant number, since it is smaller than the sum of its proper divisors (168420202692).

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

68278458780 is a wasteful number, since it uses less digits than its factorization.

68278458780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54189275 (or 54189270 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 63.

The spelling of 68278458780 in words is "sixty-eight billion, two hundred seventy-eight million, four hundred fifty-eight thousand, seven hundred eighty".