10509372426 has 64 divisors (see below), whose sum is σ = 25681563648. Its totient is φ = 2798592768.

The previous prime is 10509372421. The next prime is 10509372479. The reversal of 10509372426 is 62427390501.

It is a super-2 number, since 2×10509372426² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10509372421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2091 + ... + 144993.

It is an arithmetic number, because the mean of its divisors is an integer number (401274432).

Almost surely, 2^10509372426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10509372426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12840781824).

10509372426 is an abundant number, since it is smaller than the sum of its proper divisors (15172191222).

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

10509372426 is a wasteful number, since it uses less digits than its factorization.

10509372426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143035.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 10509372426 in words is "ten billion, five hundred nine million, three hundred seventy-two thousand, four hundred twenty-six".