4778473727 has 4 divisors (see below), whose sum is σ = 4794039096. Its totient is φ = 4762908360.

The previous prime is 4778473709. The next prime is 4778473741. The reversal of 4778473727 is 7273748774.

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

It is a cyclic number.

It is not a de Polignac number, because 4778473727 - 2⁶ = 4778473663 is a prime.

It is a super-2 number, since 2×4778473727² = 45667622319258541058, which contains 22 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 (4778473327) 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, 7782224 + ... + 7782837.

It is an arithmetic number, because the mean of its divisors is an integer number (1198509774).

Almost surely, 2^4778473727 is an apocalyptic number.

4778473727 is a deficient number, since it is larger than the sum of its proper divisors (15565369).

4778473727 is a wasteful number, since it uses less digits than its factorization.

4778473727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15565368.

The product of its digits is 12907776, while the sum is 56.

The square root of 4778473727 is about 69126.5052422007. The cubic root of 4778473727 is about 1684.3398902397.

The spelling of 4778473727 in words is "four billion, seven hundred seventy-eight million, four hundred seventy-three thousand, seven hundred twenty-seven".