71556261463 has 2 divisors, whose sum is σ = 71556261464. Its totient is φ = 71556261462.

The previous prime is 71556261451. The next prime is 71556261509. The reversal of 71556261463 is 36416265517.

It is an a-pointer prime, because the next prime (71556261509) can be obtained adding 71556261463 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71556261463 - 2²⁵ = 71522707031 is a prime.

It is a super-2 number, since 2×71556261463² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71556261443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35778130731 + 35778130732.

It is an arithmetic number, because the mean of its divisors is an integer number (35778130732).

Almost surely, 2^71556261463 is an apocalyptic number.

71556261463 is a deficient number, since it is larger than the sum of its proper divisors (1).

71556261463 is an equidigital number, since it uses as much as digits as its factorization.

71556261463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 46.

The spelling of 71556261463 in words is "seventy-one billion, five hundred fifty-six million, two hundred sixty-one thousand, four hundred sixty-three".