215536591401 has 16 divisors (see below), whose sum is σ = 296713064448. Its totient is φ = 139027482000.

The previous prime is 215536591399. The next prime is 215536591441. The reversal of 215536591401 is 104195635512.

It is not a de Polignac number, because 215536591401 - 2¹ = 215536591399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215536591441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226390 + ... + 694496.

It is an arithmetic number, because the mean of its divisors is an integer number (18544566528).

Almost surely, 2^215536591401 is an apocalyptic number.

It is an amenable number.

215536591401 is a deficient number, since it is larger than the sum of its proper divisors (81176473047).

215536591401 is a wasteful number, since it uses less digits than its factorization.

215536591401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473092.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 215536591401 in words is "two hundred fifteen billion, five hundred thirty-six million, five hundred ninety-one thousand, four hundred one".