481564686391 has 2 divisors, whose sum is σ = 481564686392. Its totient is φ = 481564686390.

The previous prime is 481564686373. The next prime is 481564686401. The reversal of 481564686391 is 193686465184.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 481564686391 - 2¹⁹ = 481564162103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481574686391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240782343195 + 240782343196.

It is an arithmetic number, because the mean of its divisors is an integer number (240782343196).

Almost surely, 2^481564686391 is an apocalyptic number.

481564686391 is a deficient number, since it is larger than the sum of its proper divisors (1).

481564686391 is an equidigital number, since it uses as much as digits as its factorization.

481564686391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29859840, while the sum is 61.

The spelling of 481564686391 in words is "four hundred eighty-one billion, five hundred sixty-four million, six hundred eighty-six thousand, three hundred ninety-one".