240557257236440 has 128 divisors (see below), whose sum is σ = 551730579840000. Its totient is φ = 94369856716800.

The previous prime is 240557257236421. The next prime is 240557257236451. The reversal of 240557257236440 is 44632752755042.

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, 1611494126 + ... + 1611643394.

It is an arithmetic number, because the mean of its divisors is an integer number (4310395155000).

Almost surely, 2^{240557257236440} is an apocalyptic number.

240557257236440 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 240557257236440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275865289920000).

240557257236440 is an abundant number, since it is smaller than the sum of its proper divisors (311173322603560).

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

240557257236440 is a wasteful number, since it uses less digits than its factorization.

240557257236440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151261 (or 151257 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 56.

The spelling of 240557257236440 in words is "two hundred forty trillion, five hundred fifty-seven billion, two hundred fifty-seven million, two hundred thirty-six thousand, four hundred forty".