4791239431117 has 2 divisors, whose sum is σ = 4791239431118. Its totient is φ = 4791239431116.

The previous prime is 4791239431109. The next prime is 4791239431133. The reversal of 4791239431117 is 7111349321974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3434995183876 + 1356244247241 = 1853374^2 + 1164579^2 .

It is a cyclic number.

It is not a de Polignac number, because 4791239431117 - 2³ = 4791239431109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4791239432117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2395619715558 + 2395619715559.

It is an arithmetic number, because the mean of its divisors is an integer number (2395619715559).

Almost surely, 2^{4791239431117} is an apocalyptic number.

It is an amenable number.

4791239431117 is a deficient number, since it is larger than the sum of its proper divisors (1).

4791239431117 is an equidigital number, since it uses as much as digits as its factorization.

4791239431117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The spelling of 4791239431117 in words is "four trillion, seven hundred ninety-one billion, two hundred thirty-nine million, four hundred thirty-one thousand, one hundred seventeen".