11426521064 has 64 divisors (see below), whose sum is σ = 25098944640. Its totient is φ = 4774775040.

The previous prime is 11426521013. The next prime is 11426521103. The reversal of 11426521064 is 46012562411.

It is a self number, because there is not a number n which added to its sum of digits gives 11426521064.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1472234 + ... + 1479974.

It is an arithmetic number, because the mean of its divisors is an integer number (392171010).

Almost surely, 2^11426521064 is an apocalyptic number.

11426521064 is a gapful number since it is divisible by the number (14) 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 11426521064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12549472320).

11426521064 is an abundant number, since it is smaller than the sum of its proper divisors (13672423576).

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

11426521064 is a wasteful number, since it uses less digits than its factorization.

11426521064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410 (or 8406 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 11426521064 in words is "eleven billion, four hundred twenty-six million, five hundred twenty-one thousand, sixty-four".