47312139997 has 2 divisors, whose sum is σ = 47312139998. Its totient is φ = 47312139996.

The previous prime is 47312139977. The next prime is 47312140097. The reversal of 47312139997 is 79993121374.

47312139997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25506006436 + 21806133561 = 159706^2 + 147669^2 .

It is a cyclic number.

It is not a de Polignac number, because 47312139997 - 2⁷ = 47312139869 is a prime.

It is a super-3 number, since 3×47312139997³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47312139967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23656069998 + 23656069999.

It is an arithmetic number, because the mean of its divisors is an integer number (23656069999).

Almost surely, 2^47312139997 is an apocalyptic number.

It is an amenable number.

47312139997 is a deficient number, since it is larger than the sum of its proper divisors (1).

47312139997 is an equidigital number, since it uses as much as digits as its factorization.

47312139997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 55.

The spelling of 47312139997 in words is "forty-seven billion, three hundred twelve million, one hundred thirty-nine thousand, nine hundred ninety-seven".