426631865040 has 480 divisors, whose sum is σ = 1497726996480. Its totient is φ = 108743040000.

The previous prime is 426631865021. The next prime is 426631865041. The reversal of 426631865040 is 40568136624.

426631865040 is a `hidden beast` number, since 4 + 2 + 6 + 63 + 1 + 86 + 504 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426631865041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 568084665 + ... + 568085415.

It is an arithmetic number, because the mean of its divisors is an integer number (3120264576).

Almost surely, 2^426631865040 is an apocalyptic number.

426631865040 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 426631865040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748863498240).

426631865040 is an abundant number, since it is smaller than the sum of its proper divisors (1071095131440).

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

426631865040 is a wasteful number, since it uses less digits than its factorization.

426631865040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 426631865040 in words is "four hundred twenty-six billion, six hundred thirty-one million, eight hundred sixty-five thousand, forty".