478201448681 has 16 divisors (see below), whose sum is σ = 549204734400. Its totient is φ = 411792724800.

The previous prime is 478201448623. The next prime is 478201448687. The reversal of 478201448681 is 186844102874.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 478201448681 - 2⁶ = 478201448617 is a prime.

It is a super-2 number, since 2×478201448681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478201448687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1442675 + ... + 1742903.

It is an arithmetic number, because the mean of its divisors is an integer number (34325295900).

Almost surely, 2^478201448681 is an apocalyptic number.

It is an amenable number.

478201448681 is a deficient number, since it is larger than the sum of its proper divisors (71003285719).

478201448681 is a wasteful number, since it uses less digits than its factorization.

478201448681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307880.

The product of its (nonzero) digits is 2752512, while the sum is 53.

The spelling of 478201448681 in words is "four hundred seventy-eight billion, two hundred one million, four hundred forty-eight thousand, six hundred eighty-one".