383645721634066 has 16 divisors (see below), whose sum is σ = 576049077686880. Its totient is φ = 191629443765760.

The previous prime is 383645721634033. The next prime is 383645721634069. The reversal of 383645721634066 is 660436127546383.

It is a junction number, because it is equal to n+sod(n) for n = 383645721633989 and 383645721634007.

It is not an unprimeable number, because it can be changed into a prime (383645721634069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10905940 + ... + 29769631.

It is an arithmetic number, because the mean of its divisors is an integer number (36003067355430).

Almost surely, 2^{383645721634066} is an apocalyptic number.

383645721634066 is a deficient number, since it is larger than the sum of its proper divisors (192403356052814).

383645721634066 is a wasteful number, since it uses less digits than its factorization.

383645721634066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40680329.

The product of its (nonzero) digits is 313528320, while the sum is 64.

The spelling of 383645721634066 in words is "three hundred eighty-three trillion, six hundred forty-five billion, seven hundred twenty-one million, six hundred thirty-four thousand, sixty-six".