3856720523739 has 8 divisors (see below), whose sum is σ = 5142372083520. Its totient is φ = 2571107989896.

The previous prime is 3856720523729. The next prime is 3856720523743. The reversal of 3856720523739 is 9373250276583.

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

It is not a de Polignac number, because 3856720523739 - 2¹¹ = 3856720521691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3856720523729) 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, 9525109 + ... + 9921750.

It is an arithmetic number, because the mean of its divisors is an integer number (642796510440).

Almost surely, 2^{3856720523739} is an apocalyptic number.

3856720523739 is a deficient number, since it is larger than the sum of its proper divisors (1285651559781).

3856720523739 is a wasteful number, since it uses less digits than its factorization.

3856720523739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19512969.

The product of its (nonzero) digits is 57153600, while the sum is 60.

The spelling of 3856720523739 in words is "three trillion, eight hundred fifty-six billion, seven hundred twenty million, five hundred twenty-three thousand, seven hundred thirty-nine".