481778686617 has 8 divisors (see below), whose sum is σ = 643633610880. Its totient is φ = 320554776720.

The previous prime is 481778686589. The next prime is 481778686651. The reversal of 481778686617 is 716686877184.

481778686617 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 481778686617 - 2²⁷ = 481644468889 is a prime.

It is a super-2 number, since 2×481778686617² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (481773686617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157751809 + ... + 157754862.

It is an arithmetic number, because the mean of its divisors is an integer number (80454201360).

Almost surely, 2^481778686617 is an apocalyptic number.

It is an amenable number.

481778686617 is a deficient number, since it is larger than the sum of its proper divisors (161854924263).

481778686617 is a wasteful number, since it uses less digits than its factorization.

481778686617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315507183.

The product of its digits is 151732224, while the sum is 69.

The spelling of 481778686617 in words is "four hundred eighty-one billion, seven hundred seventy-eight million, six hundred eighty-six thousand, six hundred seventeen".