13261001064 has 32 divisors (see below), whose sum is σ = 33351030720. Its totient is φ = 4393863296.

The previous prime is 13261001057. The next prime is 13261001093. The reversal of 13261001064 is 46010016231.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1650309 + ... + 1658324.

It is an arithmetic number, because the mean of its divisors is an integer number (1042219710).

Almost surely, 2^13261001064 is an apocalyptic number.

It is an amenable number.

13261001064 is an abundant number, since it is smaller than the sum of its proper divisors (20090029656).

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

13261001064 is a wasteful number, since it uses less digits than its factorization.

13261001064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308809 (or 3308805 counting only the distinct ones).

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

Adding to 13261001064 its reverse (46010016231), we get a palindrome (59271017295).

The spelling of 13261001064 in words is "thirteen billion, two hundred sixty-one million, one thousand, sixty-four".