39218944421913 has 16 divisors (see below), whose sum is σ = 52781784511680. Its totient is φ = 25901044279616.

The previous prime is 39218944421879. The next prime is 39218944421933. The reversal of 39218944421913 is 31912444981293.

It is a cyclic number.

It is not a de Polignac number, because 39218944421913 - 2³⁷ = 39081505468441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39218944421933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13702483 + ... + 16315511.

It is an arithmetic number, because the mean of its divisors is an integer number (3298861531980).

Almost surely, 2^{39218944421913} is an apocalyptic number.

It is an amenable number.

39218944421913 is a deficient number, since it is larger than the sum of its proper divisors (13562840089767).

39218944421913 is a wasteful number, since it uses less digits than its factorization.

39218944421913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659896.

The product of its digits is 13436928, while the sum is 60.

The spelling of 39218944421913 in words is "thirty-nine trillion, two hundred eighteen billion, nine hundred forty-four million, four hundred twenty-one thousand, nine hundred thirteen".