477780771156 has 96 divisors (see below), whose sum is σ = 1218133728000. Its totient is φ = 144861911040.

The previous prime is 477780771113. The next prime is 477780771173. The reversal of 477780771156 is 651177087774.

It is a self number, because there is not a number n which added to its sum of digits gives 477780771156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22905820 + ... + 22926668.

It is an arithmetic number, because the mean of its divisors is an integer number (12688893000).

Almost surely, 2^477780771156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 477780771156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609066864000).

477780771156 is an abundant number, since it is smaller than the sum of its proper divisors (740352956844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

477780771156 is a wasteful number, since it uses less digits than its factorization.

477780771156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23009 (or 23007 counting only the distinct ones).

The product of its (nonzero) digits is 16134720, while the sum is 60.

The spelling of 477780771156 in words is "four hundred seventy-seven billion, seven hundred eighty million, seven hundred seventy-one thousand, one hundred fifty-six".