40244791680 has 160 divisors (see below), whose sum is σ = 143721602640. Its totient is φ = 10731930624.

The previous prime is 40244791669. The next prime is 40244791693. The reversal of 40244791680 is 8619744204.

40244791680 is a `hidden beast` number, since 40 + 2 + 447 + 9 + 168 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 336324 + ... + 440003.

Almost surely, 2^40244791680 is an apocalyptic number.

40244791680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40244791680 is an abundant number, since it is smaller than the sum of its proper divisors (103476810960).

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

40244791680 is an equidigital number, since it uses as much as digits as its factorization.

40244791680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776358 (or 776337 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 40244791680 in words is "forty billion, two hundred forty-four million, seven hundred ninety-one thousand, six hundred eighty".