40401131456 has 56 divisors (see below), whose sum is σ = 94783473120. Its totient is φ = 16717704192.

The previous prime is 40401131453. The next prime is 40401131467. The reversal of 40401131456 is 65413110404.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401131453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1541855 + ... + 1567838.

It is an arithmetic number, because the mean of its divisors is an integer number (1692562020).

Almost surely, 2^40401131456 is an apocalyptic number.

It is an amenable number.

40401131456 is an abundant number, since it is smaller than the sum of its proper divisors (54382341664).

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

40401131456 is a wasteful number, since it uses less digits than its factorization.

40401131456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109741 (or 3109731 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 40401131456 in words is "forty billion, four hundred one million, one hundred thirty-one thousand, four hundred fifty-six".