213022025737 has 2 divisors, whose sum is σ = 213022025738. Its totient is φ = 213022025736.

The previous prime is 213022025663. The next prime is 213022025743. The reversal of 213022025737 is 737520220312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211148521081 + 1873504656 = 459509^2 + 43284^2 .

It is a cyclic number.

It is not a de Polignac number, because 213022025737 - 2³¹ = 210874542089 is a prime.

It is not a weakly prime, because it can be changed into another prime (213022025747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106511012868 + 106511012869.

It is an arithmetic number, because the mean of its divisors is an integer number (106511012869).

Almost surely, 2^213022025737 is an apocalyptic number.

It is an amenable number.

213022025737 is a deficient number, since it is larger than the sum of its proper divisors (1).

213022025737 is an equidigital number, since it uses as much as digits as its factorization.

213022025737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 34.

The spelling of 213022025737 in words is "two hundred thirteen billion, twenty-two million, twenty-five thousand, seven hundred thirty-seven".