478277777923 has 16 divisors (see below), whose sum is σ = 522383662080. Its totient is φ = 434276575200.

The previous prime is 478277777867. The next prime is 478277777981. The reversal of 478277777923 is 329777772874.

It is a cyclic number.

It is not a de Polignac number, because 478277777923 - 2¹³ = 478277769731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478277777993) 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, 37049236 + ... + 37062142.

It is an arithmetic number, because the mean of its divisors is an integer number (32648978880).

Almost surely, 2^478277777923 is an apocalyptic number.

478277777923 is a deficient number, since it is larger than the sum of its proper divisors (44105884157).

478277777923 is a wasteful number, since it uses less digits than its factorization.

478277777923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16698.

The product of its digits is 406594944, while the sum is 70.

The spelling of 478277777923 in words is "four hundred seventy-eight billion, two hundred seventy-seven million, seven hundred seventy-seven thousand, nine hundred twenty-three".