2171384528700 has 72 divisors (see below), whose sum is σ = 6282690573040. Its totient is φ = 579021926400.

The previous prime is 2171384528653. The next prime is 2171384528717. The reversal of 2171384528700 is 78254831712.

It is a super-2 number, since 2×2171384528700² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2171384528700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20395206 + ... + 20501394.

Almost surely, 2^{2171384528700} is an apocalyptic number.

2171384528700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171384528700 is an abundant number, since it is smaller than the sum of its proper divisors (4111306044340).

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

2171384528700 is a wasteful number, since it uses less digits than its factorization.

2171384528700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174367 (or 174360 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 2171384528700 in words is "two trillion, one hundred seventy-one billion, three hundred eighty-four million, five hundred twenty-eight thousand, seven hundred".