2177791974340 has 24 divisors (see below), whose sum is σ = 4772205023040. Its totient is φ = 833242146528.

The previous prime is 2177791974311. The next prime is 2177791974353. The reversal of 2177791974340 is 434791977712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2367164730 + ... + 2367165649.

It is an arithmetic number, because the mean of its divisors is an integer number (198841875960).

Almost surely, 2^{2177791974340} is an apocalyptic number.

2177791974340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2177791974340 is an abundant number, since it is smaller than the sum of its proper divisors (2594413048700).

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

2177791974340 is a wasteful number, since it uses less digits than its factorization.

2177791974340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734330411 (or 4734330409 counting only the distinct ones).

The product of its (nonzero) digits is 18670176, while the sum is 61.

The spelling of 2177791974340 in words is "two trillion, one hundred seventy-seven billion, seven hundred ninety-one million, nine hundred seventy-four thousand, three hundred forty".