38005721051 has 8 divisors (see below), whose sum is σ = 38097252720. Its totient is φ = 37914287488.

The previous prime is 38005721003. The next prime is 38005721053. The reversal of 38005721051 is 15012750083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38005721051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38005720999 and 38005721017.

It is not an unprimeable number, because it can be changed into a prime (38005721053) 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 7 ways as a sum of consecutive naturals, for example, 782855 + ... + 829983.

It is an arithmetic number, because the mean of its divisors is an integer number (4762156590).

Almost surely, 2^38005721051 is an apocalyptic number.

38005721051 is a deficient number, since it is larger than the sum of its proper divisors (91531669).

38005721051 is a wasteful number, since it uses less digits than its factorization.

38005721051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49053.

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 38005721051 in words is "thirty-eight billion, five million, seven hundred twenty-one thousand, fifty-one".