10161215989 has 2 divisors, whose sum is σ = 10161215990. Its totient is φ = 10161215988.

The previous prime is 10161215959. The next prime is 10161216001. The reversal of 10161215989 is 98951216101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5320535364 + 4840680625 = 72942^2 + 69575^2 .

It is a cyclic number.

It is not a de Polignac number, because 10161215989 - 2⁵ = 10161215957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10161215959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080607994 + 5080607995.

It is an arithmetic number, because the mean of its divisors is an integer number (5080607995).

Almost surely, 2^10161215989 is an apocalyptic number.

It is an amenable number.

10161215989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10161215989 is an equidigital number, since it uses as much as digits as its factorization.

10161215989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 43.

The spelling of 10161215989 in words is "ten billion, one hundred sixty-one million, two hundred fifteen thousand, nine hundred eighty-nine".