11351521064 has 16 divisors (see below), whose sum is σ = 22921340820. Its totient is φ = 5239163520.

The previous prime is 11351521037. The next prime is 11351521087. The reversal of 11351521064 is 46012515311.

It can be written as a sum of positive squares in 2 ways, for example, as 9968424964 + 1383096100 = 99842^2 + 37190^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54574517 + ... + 54574724.

Almost surely, 2^11351521064 is an apocalyptic number.

It is an amenable number.

11351521064 is an abundant number, since it is smaller than the sum of its proper divisors (11569819756).

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

11351521064 is a wasteful number, since it uses less digits than its factorization.

11351521064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109149260 (or 109149256 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 11351521064 in words is "eleven billion, three hundred fifty-one million, five hundred twenty-one thousand, sixty-four".