215501645535132 has 24 divisors (see below), whose sum is σ = 548549643180672. Its totient is φ = 65303528950000.

The previous prime is 215501645535101. The next prime is 215501645535133. The reversal of 215501645535132 is 231535546105512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215501645535133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816294111744 + ... + 816294112007.

It is an arithmetic number, because the mean of its divisors is an integer number (22856235132528).

Almost surely, 2^{215501645535132} is an apocalyptic number.

215501645535132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215501645535132 is an abundant number, since it is smaller than the sum of its proper divisors (333047997645540).

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

215501645535132 is a wasteful number, since it uses less digits than its factorization.

215501645535132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632588223769 (or 1632588223767 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 215501645535132 in words is "two hundred fifteen trillion, five hundred one billion, six hundred forty-five million, five hundred thirty-five thousand, one hundred thirty-two".