4445642340400 has 30 divisors (see below), whose sum is σ = 10680655723772. Its totient is φ = 1778256936000.

The previous prime is 4445642340263. The next prime is 4445642340401. The reversal of 4445642340400 is 40432465444.

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

It is not an unprimeable number, because it can be changed into a prime (4445642340401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5557052526 + ... + 5557053325.

Almost surely, 2^{4445642340400} is an apocalyptic number.

4445642340400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4445642340400 is an abundant number, since it is smaller than the sum of its proper divisors (6235013383372).

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

4445642340400 is a wasteful number, since it uses less digits than its factorization.

4445642340400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11114105869 (or 11114105858 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 40.

The spelling of 4445642340400 in words is "four trillion, four hundred forty-five billion, six hundred forty-two million, three hundred forty thousand, four hundred".