1040255464440 has 32 divisors (see below), whose sum is σ = 3120766393680. Its totient is φ = 277401457152.

The previous prime is 1040255464439. The next prime is 1040255464463. The reversal of 1040255464440 is 444645520401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4334397649 + ... + 4334397888.

Almost surely, 2^{1040255464440} is an apocalyptic number.

1040255464440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040255464440 is an abundant number, since it is smaller than the sum of its proper divisors (2080510929240).

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

1040255464440 is a wasteful number, since it uses less digits than its factorization.

1040255464440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8668795551 (or 8668795547 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 39.

The spelling of 1040255464440 in words is "one trillion, forty billion, two hundred fifty-five million, four hundred sixty-four thousand, four hundred forty".