40844400880 has 20 divisors (see below), whose sum is σ = 94963232232. Its totient is φ = 16337760320.

The previous prime is 40844400853. The next prime is 40844400901. The reversal of 40844400880 is 8800444804.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×40844400880² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255277426 + ... + 255277585.

Almost surely, 2^40844400880 is an apocalyptic number.

40844400880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40844400880 is an abundant number, since it is smaller than the sum of its proper divisors (54118831352).

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

40844400880 is a wasteful number, since it uses less digits than its factorization.

40844400880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510555024 (or 510555018 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 40844400880 in words is "forty billion, eight hundred forty-four million, four hundred thousand, eight hundred eighty".