3661838854722 has 32 divisors (see below), whose sum is σ = 8137623312000. Its totient is φ = 1220582406384.

The previous prime is 3661838854721. The next prime is 3661838854847. The reversal of 3661838854722 is 2274588381663.

3661838854722 is a `hidden beast` number, since 3 + 6 + 6 + 1 + 8 + 3 + 88 + 547 + 2 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 3661838854722.

It is not an unprimeable number, because it can be changed into a prime (3661838854721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383243 + ... + 3039249.

It is an arithmetic number, because the mean of its divisors is an integer number (254300728500).

Almost surely, 2^{3661838854722} is an apocalyptic number.

3661838854722 is an abundant number, since it is smaller than the sum of its proper divisors (4475784457278).

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

3661838854722 is a wasteful number, since it uses less digits than its factorization.

3661838854722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696967 (or 1696961 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 63.

The spelling of 3661838854722 in words is "three trillion, six hundred sixty-one billion, eight hundred thirty-eight million, eight hundred fifty-four thousand, seven hundred twenty-two".