3978129713390 has 32 divisors (see below), whose sum is σ = 8237777048064. Its totient is φ = 1354897533600.

The previous prime is 3978129713333. The next prime is 3978129713399. The reversal of 3978129713390 is 933179218793.

3978129713390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978129713399) 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, 188169644 + ... + 188190783.

It is an arithmetic number, because the mean of its divisors is an integer number (257430532752).

Almost surely, 2^{3978129713390} is an apocalyptic number.

3978129713390 is an abundant number, since it is smaller than the sum of its proper divisors (4259647334674).

3978129713390 is a wasteful number, since it uses less digits than its factorization.

3978129713390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376360592.

The product of its (nonzero) digits is 15431472, while the sum is 62.

The spelling of 3978129713390 in words is "three trillion, nine hundred seventy-eight billion, one hundred twenty-nine million, seven hundred thirteen thousand, three hundred ninety".