278055055060 has 96 divisors (see below), whose sum is σ = 613098097920. Its totient is φ = 105724996608.

The previous prime is 278055055043. The next prime is 278055055073. The reversal of 278055055060 is 60550550872.

It is a super-2 number, since 2×278055055060² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 278055054998 and 278055055016.

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, 145806627 + ... + 145808533.

It is an arithmetic number, because the mean of its divisors is an integer number (6386438520).

Almost surely, 2^278055055060 is an apocalyptic number.

278055055060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278055055060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306549048960).

278055055060 is an abundant number, since it is smaller than the sum of its proper divisors (335043042860).

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

278055055060 is a wasteful number, since it uses less digits than its factorization.

278055055060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745 (or 3743 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 278055055060 in words is "two hundred seventy-eight billion, fifty-five million, fifty-five thousand, sixty".