478260873961 has 4 divisors (see below), whose sum is σ = 515050171972. Its totient is φ = 441471575952.

The previous prime is 478260873929. The next prime is 478260873971. The reversal of 478260873961 is 169378062874.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108006878736 + 370253995225 = 328644^2 + 608485^2 .

It is a cyclic number.

It is not a de Polignac number, because 478260873961 - 2⁵ = 478260873929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478260873961.

It is not an unprimeable number, because it can be changed into a prime (478260873971) 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, 18394648986 + ... + 18394649011.

It is an arithmetic number, because the mean of its divisors is an integer number (128762542993).

Almost surely, 2^478260873961 is an apocalyptic number.

It is an amenable number.

478260873961 is a deficient number, since it is larger than the sum of its proper divisors (36789298011).

478260873961 is a wasteful number, since it uses less digits than its factorization.

478260873961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36789298010.

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 478260873961 in words is "four hundred seventy-eight billion, two hundred sixty million, eight hundred seventy-three thousand, nine hundred sixty-one".