9013521699 has 32 divisors (see below), whose sum is σ = 16434915840. Its totient is φ = 4754383776.

The previous prime is 9013521661. The next prime is 9013521707. The reversal of 9013521699 is 9961253109.

It is a happy number.

It is not a de Polignac number, because 9013521699 - 2¹² = 9013517603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9013521619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1831797 + ... + 1836710.

It is an arithmetic number, because the mean of its divisors is an integer number (513591120).

Almost surely, 2^9013521699 is an apocalyptic number.

9013521699 is a deficient number, since it is larger than the sum of its proper divisors (7421394141).

9013521699 is a wasteful number, since it uses less digits than its factorization.

9013521699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668536 (or 3668530 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 9013521699 is about 94939.5686687063. The cubic root of 9013521699 is about 2081.1250153985.

The spelling of 9013521699 in words is "nine billion, thirteen million, five hundred twenty-one thousand, six hundred ninety-nine".