2173363807780 has 48 divisors (see below), whose sum is σ = 4983153001344. Its totient is φ = 789651557120.

The previous prime is 2173363807757. The next prime is 2173363807859. The reversal of 2173363807780 is 877083633712.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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

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, 3877912 + ... + 4402831.

It is an arithmetic number, because the mean of its divisors is an integer number (103815687528).

Almost surely, 2^{2173363807780} is an apocalyptic number.

2173363807780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2173363807780 is an abundant number, since it is smaller than the sum of its proper divisors (2809789193564).

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

2173363807780 is a wasteful number, since it uses less digits than its factorization.

2173363807780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281956 (or 8281954 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 55.

The spelling of 2173363807780 in words is "two trillion, one hundred seventy-three billion, three hundred sixty-three million, eight hundred seven thousand, seven hundred eighty".