40111878551440 has 40 divisors (see below), whose sum is σ = 93260458859328. Its totient is φ = 16044692714880.

The previous prime is 40111878551417. The next prime is 40111878551483. The reversal of 40111878551440 is 4415587811104.

It is a tau number, because it is divible by the number of its divisors (40).

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, 25984455 + ... + 27484825.

Almost surely, 2^{40111878551440} is an apocalyptic number.

40111878551440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40111878551440 is an abundant number, since it is smaller than the sum of its proper divisors (53148580307888).

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

40111878551440 is a wasteful number, since it uses less digits than its factorization.

40111878551440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834567 (or 1834561 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 49.

The spelling of 40111878551440 in words is "forty trillion, one hundred eleven billion, eight hundred seventy-eight million, five hundred fifty-one thousand, four hundred forty".