4139193523391 has 4 divisors (see below), whose sum is σ = 4207049154984. Its totient is φ = 4071337891800.

The previous prime is 4139193523327. The next prime is 4139193523403. The reversal of 4139193523391 is 1933253919314.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4139193523391 - 2⁶ = 4139193523327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4139193523301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33927815705 + ... + 33927815826.

It is an arithmetic number, because the mean of its divisors is an integer number (1051762288746).

Almost surely, 2^{4139193523391} is an apocalyptic number.

4139193523391 is a deficient number, since it is larger than the sum of its proper divisors (67855631593).

4139193523391 is an equidigital number, since it uses as much as digits as its factorization.

4139193523391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67855631592.

The product of its digits is 2361960, while the sum is 53.

The spelling of 4139193523391 in words is "four trillion, one hundred thirty-nine billion, one hundred ninety-three million, five hundred twenty-three thousand, three hundred ninety-one".