426604988880 has 240 divisors, whose sum is σ = 1661789960064. Its totient is φ = 96054266880.

The previous prime is 426604988851. The next prime is 426604988881. The reversal of 426604988880 is 88889406624.

426604988880 is a `hidden beast` number, since 4 + 2 + 6 + 60 + 498 + 8 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426604988881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293991 + ... + 969350.

Almost surely, 2^426604988880 is an apocalyptic number.

426604988880 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 426604988880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830894980032).

426604988880 is an abundant number, since it is smaller than the sum of its proper divisors (1235184971184).

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

426604988880 is a wasteful number, since it uses less digits than its factorization.

426604988880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263434 (or 1263425 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 63.

The spelling of 426604988880 in words is "four hundred twenty-six billion, six hundred four million, nine hundred eighty-eight thousand, eight hundred eighty".