215131545524445 has 32 divisors (see below), whose sum is σ = 375508266367104. Its totient is φ = 104304556012800.

The previous prime is 215131545524429. The next prime is 215131545524459. The reversal of 215131545524445 is 544425545131512.

It is not a de Polignac number, because 215131545524445 - 2⁴ = 215131545524429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208855 + ... + 20743835.

It is an arithmetic number, because the mean of its divisors is an integer number (11734633323972).

Almost surely, 2^{215131545524445} is an apocalyptic number.

It is an amenable number.

215131545524445 is a deficient number, since it is larger than the sum of its proper divisors (160376720842659).

215131545524445 is a wasteful number, since it uses less digits than its factorization.

215131545524445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20598493.

The product of its digits is 9600000, while the sum is 51.

The spelling of 215131545524445 in words is "two hundred fifteen trillion, one hundred thirty-one billion, five hundred forty-five million, five hundred twenty-four thousand, four hundred forty-five".