9661254385 has 8 divisors (see below), whose sum is σ = 11678130216. Its totient is φ = 7672586880.

The previous prime is 9661254313. The next prime is 9661254419. The reversal of 9661254385 is 5834521669.

It can be written as a sum of positive squares in 4 ways, for example, as 3027640576 + 6633613809 = 55024^2 + 81447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9661254385 - 2²⁵ = 9627699953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7051326 + ... + 7052695.

It is an arithmetic number, because the mean of its divisors is an integer number (1459766277).

Almost surely, 2^9661254385 is an apocalyptic number.

It is an amenable number.

9661254385 is a deficient number, since it is larger than the sum of its proper divisors (2016875831).

9661254385 is a wasteful number, since it uses less digits than its factorization.

9661254385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104163.

The product of its digits is 1555200, while the sum is 49.

The square root of 9661254385 is about 98291.6801413019. The cubic root of 9661254385 is about 2129.8278704018.

The spelling of 9661254385 in words is "nine billion, six hundred sixty-one million, two hundred fifty-four thousand, three hundred eighty-five".