10239239477947 has 4 divisors (see below), whose sum is σ = 10247611710960. Its totient is φ = 10230867244936.

The previous prime is 10239239477851. The next prime is 10239239477981. The reversal of 10239239477947 is 74977493293201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10239239477947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10239239457947) 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, 4186114672 + ... + 4186117117.

It is an arithmetic number, because the mean of its divisors is an integer number (2561902927740).

Almost surely, 2^{10239239477947} is an apocalyptic number.

10239239477947 is a deficient number, since it is larger than the sum of its proper divisors (8372233013).

10239239477947 is an equidigital number, since it uses as much as digits as its factorization.

10239239477947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372233012.

The product of its (nonzero) digits is 144027072, while the sum is 67.

The spelling of 10239239477947 in words is "ten trillion, two hundred thirty-nine billion, two hundred thirty-nine million, four hundred seventy-seven thousand, nine hundred forty-seven".