278778760060 has 72 divisors (see below), whose sum is σ = 601306401024. Its totient is φ = 108564224640.

The previous prime is 278778760033. The next prime is 278778760067. The reversal of 278778760060 is 60067877872.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 278778759977 and 278778760004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278778760067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8421862 + ... + 8454898.

It is an arithmetic number, because the mean of its divisors is an integer number (8351477792).

Almost surely, 2^278778760060 is an apocalyptic number.

278778760060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278778760060 is an abundant number, since it is smaller than the sum of its proper divisors (322527640964).

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

278778760060 is a wasteful number, since it uses less digits than its factorization.

278778760060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33331 (or 33282 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 58.

The spelling of 278778760060 in words is "two hundred seventy-eight billion, seven hundred seventy-eight million, seven hundred sixty thousand, sixty".