9999481661774 has 32 divisors (see below), whose sum is σ = 16370312544000. Its totient is φ = 4543129362240.

The previous prime is 9999481661713. The next prime is 9999481661777. The reversal of 9999481661774 is 4771661849999.

9999481661774 = T₁ + T₂ + ... + T₃₉₁₄₇.

9999481661774 is a nontrivial binomial coefficient, being equal to C(39149, 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999481661777) by changing a digit.

It is the 39147-th tetrahedral number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766296002 + ... + 766309050.

It is an arithmetic number, because the mean of its divisors is an integer number (511572267000).

Almost surely, 2^{9999481661774} is an apocalyptic number.

9999481661774 is a deficient number, since it is larger than the sum of its proper divisors (6370830882226).

9999481661774 is a wasteful number, since it uses less digits than its factorization.

9999481661774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26408.

The product of its digits is 1481421312, while the sum is 80.

The spelling of 9999481661774 in words is "nine trillion, nine hundred ninety-nine billion, four hundred eighty-one million, six hundred sixty-one thousand, seven hundred seventy-four".