3858660720432 has 840 divisors, whose sum is σ = 13426953026256. Its totient is φ = 1070025126912.

The previous prime is 3858660720377. The next prime is 3858660720451. The reversal of 3858660720432 is 2340270668583.

3858660720432 is a `hidden beast` number, since 3 + 8 + 5 + 8 + 6 + 607 + 20 + 4 + 3 + 2 = 666.

3858660720432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 4841481058 + ... + 4841481854.

Almost surely, 2^{3858660720432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3858660720432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6713476513128).

3858660720432 is an abundant number, since it is smaller than the sum of its proper divisors (9568292305824).

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

3858660720432 is a wasteful number, since it uses less digits than its factorization.

3858660720432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 3858660720432 in words is "three trillion, eight hundred fifty-eight billion, six hundred sixty million, seven hundred twenty thousand, four hundred thirty-two".