2143555772900 has 36 divisors (see below), whose sum is σ = 4668680352000. Its totient is φ = 854258378400.

The previous prime is 2143555772899. The next prime is 2143555772923. The reversal of 2143555772900 is 92775553412.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39521900 + ... + 39576099.

Almost surely, 2^{2143555772900} is an apocalyptic number.

2143555772900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143555772900 is an abundant number, since it is smaller than the sum of its proper divisors (2525124579100).

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

2143555772900 is a wasteful number, since it uses less digits than its factorization.

2143555772900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79098284 (or 79098277 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 2143555772900 in words is "two trillion, one hundred forty-three billion, five hundred fifty-five million, seven hundred seventy-two thousand, nine hundred".