38426563784644 has 12 divisors (see below), whose sum is σ = 76853127569344. Its totient is φ = 16468527336264.

The previous prime is 38426563784629. The next prime is 38426563784683. The reversal of 38426563784644 is 44648736562483.

38426563784644 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686188638984 + ... + 686188639039.

Almost surely, 2^{38426563784644} is an apocalyptic number.

It is an amenable number.

38426563784644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38426563784644 is a wasteful number, since it uses less digits than its factorization.

38426563784644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372377278034 (or 1372377278032 counting only the distinct ones).

The product of its digits is 2229534720, while the sum is 70.

The spelling of 38426563784644 in words is "thirty-eight trillion, four hundred twenty-six billion, five hundred sixty-three million, seven hundred eighty-four thousand, six hundred forty-four".