3856720523740 has 48 divisors (see below), whose sum is σ = 9345994624512. Its totient is φ = 1309466270016.

The previous prime is 3856720523729. The next prime is 3856720523743. The reversal of 3856720523740 is 473250276583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856720523743) 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, 133713754 + ... + 133742593.

It is an arithmetic number, because the mean of its divisors is an integer number (194708221344).

Almost surely, 2^{3856720523740} is an apocalyptic number.

It is an amenable number.

3856720523740 is an abundant number, since it is smaller than the sum of its proper divisors (5489274100772).

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

3856720523740 is a wasteful number, since it uses less digits than its factorization.

3856720523740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267456466 (or 267456464 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 52.

The spelling of 3856720523740 in words is "three trillion, eight hundred fifty-six billion, seven hundred twenty million, five hundred twenty-three thousand, seven hundred forty".