71289277463 has 4 divisors (see below), whose sum is σ = 73747528440. Its totient is φ = 68831026488.

The previous prime is 71289277429. The next prime is 71289277517. The reversal of 71289277463 is 36477298217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36477298217 = 337 ⋅108241241.

It is not a de Polignac number, because 71289277463 - 2⁸ = 71289277207 is a prime.

It is a super-2 number, since 2×71289277463² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71289277399 and 71289277408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71289270463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229125445 + ... + 1229125502.

It is an arithmetic number, because the mean of its divisors is an integer number (18436882110).

Almost surely, 2^71289277463 is an apocalyptic number.

71289277463 is a deficient number, since it is larger than the sum of its proper divisors (2458250977).

71289277463 is a wasteful number, since it uses less digits than its factorization.

71289277463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458250976.

The product of its digits is 7112448, while the sum is 56.

The spelling of 71289277463 in words is "seventy-one billion, two hundred eighty-nine million, two hundred seventy-seven thousand, four hundred sixty-three".