240155887440 has 120 divisors (see below), whose sum is σ = 866031579360. Its totient is φ = 54892771584.

The previous prime is 240155887409. The next prime is 240155887483. The reversal of 240155887440 is 44788551042.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 240155887440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10198950 + ... + 10222469.

It is an arithmetic number, because the mean of its divisors is an integer number (7216929828).

Almost surely, 2^240155887440 is an apocalyptic number.

240155887440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240155887440 is an abundant number, since it is smaller than the sum of its proper divisors (625875691920).

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

240155887440 is a wasteful number, since it uses less digits than its factorization.

240155887440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20421449 (or 20421436 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 48.

The spelling of 240155887440 in words is "two hundred forty billion, one hundred fifty-five million, eight hundred eighty-seven thousand, four hundred forty".