83671281047 has 2 divisors, whose sum is σ = 83671281048. Its totient is φ = 83671281046.

The previous prime is 83671280993. The next prime is 83671281091. The reversal of 83671281047 is 74018217638.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83671281047 - 2⁶ = 83671280983 is a prime.

It is a super-2 number, since 2×83671281047² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83671280992 and 83671281010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83671221047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41835640523 + 41835640524.

It is an arithmetic number, because the mean of its divisors is an integer number (41835640524).

Almost surely, 2^83671281047 is an apocalyptic number.

83671281047 is a deficient number, since it is larger than the sum of its proper divisors (1).

83671281047 is an equidigital number, since it uses as much as digits as its factorization.

83671281047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 83671281047 in words is "eighty-three billion, six hundred seventy-one million, two hundred eighty-one thousand, forty-seven".