81263054407627 has 2 divisors, whose sum is σ = 81263054407628. Its totient is φ = 81263054407626.

The previous prime is 81263054407573. The next prime is 81263054407699. The reversal of 81263054407627 is 72670445036218.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81263054407627 is a prime.

It is a super-2 number, since 2×81263054407627² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (81263054407027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40631527203813 + 40631527203814.

It is an arithmetic number, because the mean of its divisors is an integer number (40631527203814).

Almost surely, 2^{81263054407627} is an apocalyptic number.

81263054407627 is a deficient number, since it is larger than the sum of its proper divisors (1).

81263054407627 is an equidigital number, since it uses as much as digits as its factorization.

81263054407627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 81263054407627 in words is "eighty-one trillion, two hundred sixty-three billion, fifty-four million, four hundred seven thousand, six hundred twenty-seven".