13501021532 has 12 divisors (see below), whose sum is σ = 23666235600. Its totient is φ = 6739239936.

The previous prime is 13501021531. The next prime is 13501021559. The reversal of 13501021532 is 23512010531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13501021498 and 13501021507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13501021531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2815013 + ... + 2819804.

It is an arithmetic number, because the mean of its divisors is an integer number (1972186300).

Almost surely, 2^13501021532 is an apocalyptic number.

It is an amenable number.

13501021532 is a deficient number, since it is larger than the sum of its proper divisors (10165214068).

13501021532 is a wasteful number, since it uses less digits than its factorization.

13501021532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635420 (or 5635418 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 13501021532 in words is "thirteen billion, five hundred one million, twenty-one thousand, five hundred thirty-two".