9661814733 has 16 divisors (see below), whose sum is σ = 13316366336. Its totient is φ = 6224811120.

The previous prime is 9661814719. The next prime is 9661814737. The reversal of 9661814733 is 3374181669.

It is a happy number.

It is not a de Polignac number, because 9661814733 - 2²¹ = 9659717581 is a prime.

It is a super-2 number, since 2×9661814733² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661814737) 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, 3841 + ... + 139062.

It is an arithmetic number, because the mean of its divisors is an integer number (832272896).

Almost surely, 2^9661814733 is an apocalyptic number.

9661814733 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

9661814733 is a deficient number, since it is larger than the sum of its proper divisors (3654551603).

9661814733 is a wasteful number, since it uses less digits than its factorization.

9661814733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143664.

The product of its digits is 653184, while the sum is 48.

The square root of 9661814733 is about 98294.5305345114. The cubic root of 9661814733 is about 2129.8690459286.

The spelling of 9661814733 in words is "nine billion, six hundred sixty-one million, eight hundred fourteen thousand, seven hundred thirty-three".