9818259690961 has 16 divisors (see below), whose sum is σ = 10006786746880. Its totient is φ = 9630646346880.

The previous prime is 9818259690937. The next prime is 9818259690979. The reversal of 9818259690961 is 1690969528189.

It is a cyclic number.

It is not a de Polignac number, because 9818259690961 - 2¹³ = 9818259682769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9818259690901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48935530 + ... + 49135756.

It is an arithmetic number, because the mean of its divisors is an integer number (625424171680).

Almost surely, 2^{9818259690961} is an apocalyptic number.

It is an amenable number.

9818259690961 is a deficient number, since it is larger than the sum of its proper divisors (188527055919).

9818259690961 is a wasteful number, since it uses less digits than its factorization.

9818259690961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202504.

The product of its (nonzero) digits is 151165440, while the sum is 73.

The spelling of 9818259690961 in words is "nine trillion, eight hundred eighteen billion, two hundred fifty-nine million, six hundred ninety thousand, nine hundred sixty-one".