215715611233 has 2 divisors, whose sum is σ = 215715611234. Its totient is φ = 215715611232.

The previous prime is 215715611207. The next prime is 215715611239. The reversal of 215715611233 is 332116517512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215474212864 + 241398369 = 464192^2 + 15537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215715611233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215715611192 and 215715611201.

It is not a weakly prime, because it can be changed into another prime (215715611239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107857805616 + 107857805617.

It is an arithmetic number, because the mean of its divisors is an integer number (107857805617).

Almost surely, 2^215715611233 is an apocalyptic number.

It is an amenable number.

215715611233 is a deficient number, since it is larger than the sum of its proper divisors (1).

215715611233 is an equidigital number, since it uses as much as digits as its factorization.

215715611233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The spelling of 215715611233 in words is "two hundred fifteen billion, seven hundred fifteen million, six hundred eleven thousand, two hundred thirty-three".