3978920711499 has 32 divisors (see below), whose sum is σ = 5382599040000. Its totient is φ = 2614093671840.

The previous prime is 3978920711473. The next prime is 3978920711531. The reversal of 3978920711499 is 9941170298793.

3978920711499 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3978920711499 - 2⁷ = 3978920711371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3978920711429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290616244 + ... + 290629934.

It is an arithmetic number, because the mean of its divisors is an integer number (168206220000).

Almost surely, 2^{3978920711499} is an apocalyptic number.

3978920711499 is a deficient number, since it is larger than the sum of its proper divisors (1403678328501).

3978920711499 is a wasteful number, since it uses less digits than its factorization.

3978920711499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16615.

The product of its (nonzero) digits is 61725888, while the sum is 69.

The spelling of 3978920711499 in words is "three trillion, nine hundred seventy-eight billion, nine hundred twenty million, seven hundred eleven thousand, four hundred ninety-nine".