13261021602 has 16 divisors (see below), whose sum is σ = 26971570080. Its totient is φ = 4345419392.

The previous prime is 13261021541. The next prime is 13261021619. The reversal of 13261021602 is 20612016231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18729903 + ... + 18730610.

It is an arithmetic number, because the mean of its divisors is an integer number (1685723130).

Almost surely, 2^13261021602 is an apocalyptic number.

13261021602 is an abundant number, since it is smaller than the sum of its proper divisors (13710548478).

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

13261021602 is a wasteful number, since it uses less digits than its factorization.

13261021602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37460577.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13261021602 its reverse (20612016231), we get a palindrome (33873037833).

The spelling of 13261021602 in words is "thirteen billion, two hundred sixty-one million, twenty-one thousand, six hundred two".