40440400803840 has 96 divisors (see below), whose sum is σ = 129377688607440. Its totient is φ = 10784106872832.

The previous prime is 40440400803839. The next prime is 40440400803851. The reversal of 40440400803840 is 4830800404404.

It is a tau number, because it is divible by the number of its divisors (96).

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, 658178929 + ... + 658240368.

Almost surely, 2^{40440400803840} is an apocalyptic number.

40440400803840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40440400803840 is an abundant number, since it is smaller than the sum of its proper divisors (88937287803600).

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

40440400803840 is a wasteful number, since it uses less digits than its factorization.

40440400803840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316419327 (or 1316419307 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 39.

The spelling of 40440400803840 in words is "forty trillion, four hundred forty billion, four hundred million, eight hundred three thousand, eight hundred forty".