47539462777 has 2 divisors, whose sum is σ = 47539462778. Its totient is φ = 47539462776.

The previous prime is 47539462771. The next prime is 47539462781. The reversal of 47539462777 is 77726493574.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32450779881 + 15088682896 = 180141^2 + 122836^2 .

It is a cyclic number.

It is not a de Polignac number, because 47539462777 - 2³ = 47539462769 is a prime.

It is a super-2 number, since 2×47539462777² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47539462771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23769731388 + 23769731389.

It is an arithmetic number, because the mean of its divisors is an integer number (23769731389).

Almost surely, 2^47539462777 is an apocalyptic number.

It is an amenable number.

47539462777 is a deficient number, since it is larger than the sum of its proper divisors (1).

47539462777 is an equidigital number, since it uses as much as digits as its factorization.

47539462777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62233920, while the sum is 61.

The spelling of 47539462777 in words is "forty-seven billion, five hundred thirty-nine million, four hundred sixty-two thousand, seven hundred seventy-seven".