477947839813 has 4 divisors (see below), whose sum is σ = 482177466828. Its totient is φ = 473718212800.

The previous prime is 477947839777. The next prime is 477947839823. The reversal of 477947839813 is 318938749774.

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 192175270884 + 285772568929 = 438378^2 + 534577^2 .

It is a cyclic number.

It is not a de Polignac number, because 477947839813 - 2²¹ = 477945742661 is a prime.

It is a super-3 number, since 3×477947839813³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477947839823) 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, 2114813338 + ... + 2114813563.

It is an arithmetic number, because the mean of its divisors is an integer number (120544366707).

Almost surely, 2^477947839813 is an apocalyptic number.

It is an amenable number.

477947839813 is a deficient number, since it is larger than the sum of its proper divisors (4229627015).

477947839813 is a wasteful number, since it uses less digits than its factorization.

477947839813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229627014.

The product of its digits is 256048128, while the sum is 70.

The spelling of 477947839813 in words is "four hundred seventy-seven billion, nine hundred forty-seven million, eight hundred thirty-nine thousand, eight hundred thirteen".