481494751391 has 4 divisors (see below), whose sum is σ = 481496143800. Its totient is φ = 481493358984.

The previous prime is 481494751357. The next prime is 481494751393. The reversal of 481494751391 is 193157494184.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 481494751391 - 2⁶ = 481494751327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481494751393) 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, 263180 + ... + 1015998.

It is an arithmetic number, because the mean of its divisors is an integer number (120374035950).

Almost surely, 2^481494751391 is an apocalyptic number.

481494751391 is a deficient number, since it is larger than the sum of its proper divisors (1392409).

481494751391 is an equidigital number, since it uses as much as digits as its factorization.

481494751391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392408.

The product of its digits is 4354560, while the sum is 56.

The spelling of 481494751391 in words is "four hundred eighty-one billion, four hundred ninety-four million, seven hundred fifty-one thousand, three hundred ninety-one".