3644440040376 has 96 divisors (see below), whose sum is σ = 10496963240400. Its totient is φ = 1139011061760.

The previous prime is 3644440040363. The next prime is 3644440040399. The reversal of 3644440040376 is 6730400444463.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13599595 + ... + 13864986.

Almost surely, 2^{3644440040376} is an apocalyptic number.

3644440040376 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3644440040376 is an abundant number, since it is smaller than the sum of its proper divisors (6852523200024).

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

3644440040376 is a wasteful number, since it uses less digits than its factorization.

3644440040376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27464709 (or 27464702 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 45.

The spelling of 3644440040376 in words is "three trillion, six hundred forty-four billion, four hundred forty million, forty thousand, three hundred seventy-six".