11847907639 has 4 divisors (see below), whose sum is σ = 12230098240. Its totient is φ = 11465717040.

The previous prime is 11847907619. The next prime is 11847907667. The reversal of 11847907639 is 93670974811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93670974811 = 61 ⋅1535589751.

It is not a de Polignac number, because 11847907639 - 2¹³ = 11847899447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11847907639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11847907619) 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, 191095254 + ... + 191095315.

It is an arithmetic number, because the mean of its divisors is an integer number (3057524560).

Almost surely, 2^11847907639 is an apocalyptic number.

11847907639 is a deficient number, since it is larger than the sum of its proper divisors (382190601).

11847907639 is an equidigital number, since it uses as much as digits as its factorization.

11847907639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382190600.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 11847907639 in words is "eleven billion, eight hundred forty-seven million, nine hundred seven thousand, six hundred thirty-nine".