47387471749 has 2 divisors, whose sum is σ = 47387471750. Its totient is φ = 47387471748.

The previous prime is 47387471657. The next prime is 47387471821. The reversal of 47387471749 is 94717478374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30087330849 + 17300140900 = 173457^2 + 131530^2 .

It is a cyclic number.

It is not a de Polignac number, because 47387471749 - 2³³ = 38797537157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47387471249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23693735874 + 23693735875.

It is an arithmetic number, because the mean of its divisors is an integer number (23693735875).

Almost surely, 2^47387471749 is an apocalyptic number.

It is an amenable number.

47387471749 is a deficient number, since it is larger than the sum of its proper divisors (1).

47387471749 is an equidigital number, since it uses as much as digits as its factorization.

47387471749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33191424, while the sum is 61.

The spelling of 47387471749 in words is "forty-seven billion, three hundred eighty-seven million, four hundred seventy-one thousand, seven hundred forty-nine".