207439678913939 has 4 divisors (see below), whose sum is σ = 210840329388000. Its totient is φ = 204039028439880.

The previous prime is 207439678913923. The next prime is 207439678913993. The reversal of 207439678913939 is 939319876934702.

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 207439678913939 - 2⁴ = 207439678913923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207439678913239) 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, 1700325236939 + ... + 1700325237060.

It is an arithmetic number, because the mean of its divisors is an integer number (52710082347000).

Almost surely, 2^{207439678913939} is an apocalyptic number.

207439678913939 is a deficient number, since it is larger than the sum of its proper divisors (3400650474061).

207439678913939 is an equidigital number, since it uses as much as digits as its factorization.

207439678913939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400650474060.

The product of its (nonzero) digits is 3333197952, while the sum is 80.

The spelling of 207439678913939 in words is "two hundred seven trillion, four hundred thirty-nine billion, six hundred seventy-eight million, nine hundred thirteen thousand, nine hundred thirty-nine".