215430545121100 has 18 divisors (see below), whose sum is σ = 467484282913004. Its totient is φ = 86172218048400.

The previous prime is 215430545121073. The next prime is 215430545121163. The reversal of 215430545121100 is 1121545034512.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1077152725506 + ... + 1077152725705.

Almost surely, 2^{215430545121100} is an apocalyptic number.

215430545121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215430545121100 is an abundant number, since it is smaller than the sum of its proper divisors (252053737791904).

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

215430545121100 is a wasteful number, since it uses less digits than its factorization.

215430545121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154305451225 (or 2154305451218 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 215430545121100 in words is "two hundred fifteen trillion, four hundred thirty billion, five hundred forty-five million, one hundred twenty-one thousand, one hundred".