2173913043840 has 160 divisors (see below), whose sum is σ = 7763436176760. Its totient is φ = 579710131200.

The previous prime is 2173913043833. The next prime is 2173913043853. The reversal of 2173913043840 is 483403193712.

2173913043840 is a `hidden beast` number, since 2 + 17 + 39 + 130 + 438 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

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 19 ways as a sum of consecutive naturals, for example, 20915686 + ... + 21019365.

Almost surely, 2^{2173913043840} is an apocalyptic number.

2173913043840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2173913043840 is an abundant number, since it is smaller than the sum of its proper divisors (5589523132920).

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

2173913043840 is an equidigital number, since it uses as much as digits as its factorization.

2173913043840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41935082 (or 41935061 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 2173913043840 in words is "two trillion, one hundred seventy-three billion, nine hundred thirteen million, forty-three thousand, eight hundred forty".