2127999155900 has 36 divisors (see below), whose sum is σ = 4742562451368. Its totient is φ = 828194264640.

The previous prime is 2127999155899. The next prime is 2127999155903. The reversal of 2127999155900 is 95519997212.

It is a super-3 number, since 3×2127999155900³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2127999155900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127999155903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287563754 + ... + 287571153.

Almost surely, 2^{2127999155900} is an apocalyptic number.

2127999155900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2127999155900 is an abundant number, since it is smaller than the sum of its proper divisors (2614563295468).

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

2127999155900 is a wasteful number, since it uses less digits than its factorization.

2127999155900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575134958 (or 575134951 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 59.

The spelling of 2127999155900 in words is "two trillion, one hundred twenty-seven billion, nine hundred ninety-nine million, one hundred fifty-five thousand, nine hundred".