278496161420 has 12 divisors (see below), whose sum is σ = 584841939024. Its totient is φ = 111398464560.

The previous prime is 278496161407. The next prime is 278496161429. The reversal of 278496161420 is 24161694872.

It is a super-2 number, since 2×278496161420² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (278496161429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6962404016 + ... + 6962404055.

It is an arithmetic number, because the mean of its divisors is an integer number (48736828252).

Almost surely, 2^278496161420 is an apocalyptic number.

278496161420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278496161420 is an abundant number, since it is smaller than the sum of its proper divisors (306345777604).

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

278496161420 is a wasteful number, since it uses less digits than its factorization.

278496161420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13924808080 (or 13924808078 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 278496161420 in words is "two hundred seventy-eight billion, four hundred ninety-six million, one hundred sixty-one thousand, four hundred twenty".