253960278440 has 32 divisors (see below), whose sum is σ = 623357048160. Its totient is φ = 92349192000.

The previous prime is 253960278437. The next prime is 253960278491. The reversal of 253960278440 is 44872069352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288590786 + ... + 288591665.

It is an arithmetic number, because the mean of its divisors is an integer number (19479907755).

Almost surely, 2^253960278440 is an apocalyptic number.

253960278440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253960278440 is an abundant number, since it is smaller than the sum of its proper divisors (369396769720).

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

253960278440 is a wasteful number, since it uses less digits than its factorization.

253960278440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577182473 (or 577182469 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 253960278440 in words is "two hundred fifty-three billion, nine hundred sixty million, two hundred seventy-eight thousand, four hundred forty".