2164446079840 has 96 divisors (see below), whose sum is σ = 5683620319776. Its totient is φ = 772220866560.

The previous prime is 2164446079819. The next prime is 2164446079853. The reversal of 2164446079840 is 489706444612.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11508597 + ... + 11695156.

It is an arithmetic number, because the mean of its divisors is an integer number (59204378331).

Almost surely, 2^{2164446079840} is an apocalyptic number.

2164446079840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164446079840 is an abundant number, since it is smaller than the sum of its proper divisors (3519174239936).

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

2164446079840 is a wasteful number, since it uses less digits than its factorization.

2164446079840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23203832 (or 23203824 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 55.

The spelling of 2164446079840 in words is "two trillion, one hundred sixty-four billion, four hundred forty-six million, seventy-nine thousand, eight hundred forty".