215610506255201 has 2 divisors, whose sum is σ = 215610506255202. Its totient is φ = 215610506255200.

The previous prime is 215610506255197. The next prime is 215610506255233. The reversal of 215610506255201 is 102552605016512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175862714232976 + 39747792022225 = 13261324^2 + 6304585^2 .

It is a cyclic number.

It is not a de Polignac number, because 215610506255201 - 2² = 215610506255197 is a prime.

It is not a weakly prime, because it can be changed into another prime (215610506215201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107805253127600 + 107805253127601.

It is an arithmetic number, because the mean of its divisors is an integer number (107805253127601).

Almost surely, 2^{215610506255201} is an apocalyptic number.

It is an amenable number.

215610506255201 is a deficient number, since it is larger than the sum of its proper divisors (1).

215610506255201 is an equidigital number, since it uses as much as digits as its factorization.

215610506255201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 215610506255201 in words is "two hundred fifteen trillion, six hundred ten billion, five hundred six million, two hundred fifty-five thousand, two hundred one".