40187444760 has 128 divisors (see below), whose sum is σ = 134029209600. Its totient is φ = 10710967680.

The previous prime is 40187444719. The next prime is 40187444789. The reversal of 40187444760 is 6744478104.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 2271067 + ... + 2288693.

It is an arithmetic number, because the mean of its divisors is an integer number (1047103200).

Almost surely, 2^40187444760 is an apocalyptic number.

40187444760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40187444760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67014604800).

40187444760 is an abundant number, since it is smaller than the sum of its proper divisors (93841764840).

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

40187444760 is a wasteful number, since it uses less digits than its factorization.

40187444760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19758 (or 19748 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 40187444760 in words is "forty billion, one hundred eighty-seven million, four hundred forty-four thousand, seven hundred sixty".