481512626557 has 4 divisors (see below), whose sum is σ = 481514070940. Its totient is φ = 481511182176.

The previous prime is 481512626531. The next prime is 481512626603. The reversal of 481512626557 is 755626215184.

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 can be written as a sum of positive squares in 2 ways, for example, as 302740947961 + 178771678596 = 550219^2 + 422814^2 .

It is a cyclic number.

It is not a de Polignac number, because 481512626557 - 2⁷ = 481512626429 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 (481512626657) 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, 60919 + ... + 983227.

It is an arithmetic number, because the mean of its divisors is an integer number (120378517735).

Almost surely, 2^481512626557 is an apocalyptic number.

It is an amenable number.

481512626557 is a deficient number, since it is larger than the sum of its proper divisors (1444383).

481512626557 is an equidigital number, since it uses as much as digits as its factorization.

481512626557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444382.

The product of its digits is 4032000, while the sum is 52.

The spelling of 481512626557 in words is "four hundred eighty-one billion, five hundred twelve million, six hundred twenty-six thousand, five hundred fifty-seven".