38721084740657 has 16 divisors (see below), whose sum is σ = 42567937663680. Its totient is φ = 34928745196800.

The previous prime is 38721084740609. The next prime is 38721084740659. The reversal of 38721084740657 is 75604748012783.

It is a cyclic number.

It is not a de Polignac number, because 38721084740657 - 2⁶ = 38721084740593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38721084740657.

It is not an unprimeable number, because it can be changed into a prime (38721084740659) 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, 12954533 + ... + 15660845.

It is an arithmetic number, because the mean of its divisors is an integer number (2660496103980).

Almost surely, 2^{38721084740657} is an apocalyptic number.

It is an amenable number.

38721084740657 is a deficient number, since it is larger than the sum of its proper divisors (3846852923023).

38721084740657 is a wasteful number, since it uses less digits than its factorization.

38721084740657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716384.

The product of its (nonzero) digits is 63221760, while the sum is 62.

The spelling of 38721084740657 in words is "thirty-eight trillion, seven hundred twenty-one billion, eighty-four million, seven hundred forty thousand, six hundred fifty-seven".