476778251840 has 224 divisors, whose sum is σ = 1321427530368. Its totient is φ = 161927168000.

The previous prime is 476778251813. The next prime is 476778251843. The reversal of 476778251840 is 48152877674.

It is a self number, because there is not a number n which added to its sum of digits gives 476778251840.

It is not an unprimeable number, because it can be changed into a prime (476778251843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7808630 + ... + 7869450.

Almost surely, 2^476778251840 is an apocalyptic number.

476778251840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 476778251840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660713765184).

476778251840 is an abundant number, since it is smaller than the sum of its proper divisors (844649278528).

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

476778251840 is a wasteful number, since it uses less digits than its factorization.

476778251840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60997 (or 60987 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 59.

The spelling of 476778251840 in words is "four hundred seventy-six billion, seven hundred seventy-eight million, two hundred fifty-one thousand, eight hundred forty".