635434342026 has 64 divisors (see below), whose sum is σ = 1426949056512. Its totient is φ = 186968880000.

The previous prime is 635434341979. The next prime is 635434342043. The reversal of 635434342026 is 620243434536.

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, 14511 + ... + 1127421.

It is an arithmetic number, because the mean of its divisors is an integer number (22296079008).

Almost surely, 2^635434342026 is an apocalyptic number.

635434342026 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 635434342026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713474528256).

635434342026 is an abundant number, since it is smaller than the sum of its proper divisors (791514714486).

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

635434342026 is a wasteful number, since it uses less digits than its factorization.

635434342026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113179.

The product of its (nonzero) digits is 1244160, while the sum is 42.

The spelling of 635434342026 in words is "six hundred thirty-five billion, four hundred thirty-four million, three hundred forty-two thousand, twenty-six".