13247770388 has 12 divisors (see below), whose sum is σ = 23184793632. Its totient is φ = 6623543640.

The previous prime is 13247770363. The next prime is 13247770409. The reversal of 13247770388 is 88307774231.

It is a congruent number.

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, 14993 + ... + 163463.

It is an arithmetic number, because the mean of its divisors is an integer number (1932066136).

Almost surely, 2^13247770388 is an apocalyptic number.

It is an amenable number.

13247770388 is a deficient number, since it is larger than the sum of its proper divisors (9937023244).

13247770388 is a wasteful number, since it uses less digits than its factorization.

13247770388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170782 (or 170780 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 13247770388 in words is "thirteen billion, two hundred forty-seven million, seven hundred seventy thousand, three hundred eighty-eight".