426777767220 has 192 divisors, whose sum is σ = 1378306621440. Its totient is φ = 96650039808.

The previous prime is 426777767201. The next prime is 426777767237. The reversal of 426777767220 is 22767777624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42506961 + ... + 42516999.

It is an arithmetic number, because the mean of its divisors is an integer number (7178680320).

Almost surely, 2^426777767220 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 426777767220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689153310720).

426777767220 is an abundant number, since it is smaller than the sum of its proper divisors (951528854220).

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

426777767220 is a wasteful number, since it uses less digits than its factorization.

426777767220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10982 (or 10980 counting only the distinct ones).

The product of its (nonzero) digits is 19361664, while the sum is 57.

The spelling of 426777767220 in words is "four hundred twenty-six billion, seven hundred seventy-seven million, seven hundred sixty-seven thousand, two hundred twenty".