26434623402 has 192 divisors, whose sum is σ = 67920652800. Its totient is φ = 7604150400.

The previous prime is 26434623389. The next prime is 26434623443. The reversal of 26434623402 is 20432643462.

26434623402 is a `hidden beast` number, since 2 + 643 + 4 + 6 + 2 + 3 + 4 + 0 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11557503 + ... + 11559789.

It is an arithmetic number, because the mean of its divisors is an integer number (353753400).

Almost surely, 2^26434623402 is an apocalyptic number.

26434623402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26434623402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33960326400).

26434623402 is an abundant number, since it is smaller than the sum of its proper divisors (41486029398).

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

26434623402 is a wasteful number, since it uses less digits than its factorization.

26434623402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410 (or 2393 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 26434623402 in words is "twenty-six billion, four hundred thirty-four million, six hundred twenty-three thousand, four hundred two".