15641898133 has 2 divisors, whose sum is σ = 15641898134. Its totient is φ = 15641898132.

The previous prime is 15641898127. The next prime is 15641898137. The reversal of 15641898133 is 33189814651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15255461169 + 386436964 = 123513^2 + 19658^2 .

It is a cyclic number.

It is not a de Polignac number, because 15641898133 - 2²⁵ = 15608343701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15641898137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7820949066 + 7820949067.

It is an arithmetic number, because the mean of its divisors is an integer number (7820949067).

Almost surely, 2^15641898133 is an apocalyptic number.

It is an amenable number.

15641898133 is a deficient number, since it is larger than the sum of its proper divisors (1).

15641898133 is an equidigital number, since it uses as much as digits as its factorization.

15641898133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The spelling of 15641898133 in words is "fifteen billion, six hundred forty-one million, eight hundred ninety-eight thousand, one hundred thirty-three".