9661654831224 has 64 divisors (see below), whose sum is σ = 26610858564480. Its totient is φ = 2898786320000.

The previous prime is 9661654831219. The next prime is 9661654831229. The reversal of 9661654831224 is 4221384561669.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9661654831219) and next prime (9661654831229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661654831229) 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, 181147482 + ... + 181200809.

It is an arithmetic number, because the mean of its divisors is an integer number (415794665070).

Almost surely, 2^{9661654831224} is an apocalyptic number.

It is an amenable number.

9661654831224 is an abundant number, since it is smaller than the sum of its proper divisors (16949203733256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9661654831224 is a wasteful number, since it uses less digits than its factorization.

9661654831224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362348412 (or 362348408 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 57.

The spelling of 9661654831224 in words is "nine trillion, six hundred sixty-one billion, six hundred fifty-four million, eight hundred thirty-one thousand, two hundred twenty-four".