215544535132100 has 18 divisors (see below), whose sum is σ = 467731641236874. Its totient is φ = 86217814052800.

The previous prime is 215544535132057. The next prime is 215544535132123. The reversal of 215544535132100 is 1231535445512.

It can be written as a sum of positive squares in 3 ways, for example, as 2490342798724 + 213054192333376 = 1578082^2 + 14596376^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1077722675561 + ... + 1077722675760.

Almost surely, 2^{215544535132100} is an apocalyptic number.

215544535132100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215544535132100 is an abundant number, since it is smaller than the sum of its proper divisors (252187106104774).

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

215544535132100 is a wasteful number, since it uses less digits than its factorization.

215544535132100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155445351335 (or 2155445351328 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 215544535132100 in words is "two hundred fifteen trillion, five hundred forty-four billion, five hundred thirty-five million, one hundred thirty-two thousand, one hundred".