13311769720 has 64 divisors (see below), whose sum is σ = 31476503520. Its totient is φ = 5060289024.

The previous prime is 13311769703. The next prime is 13311769727. The reversal of 13311769720 is 2796711331.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311769727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40947 + ... + 168226.

Almost surely, 2^13311769720 is an apocalyptic number.

13311769720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311769720 is an abundant number, since it is smaller than the sum of its proper divisors (18164733800).

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

13311769720 is a wasteful number, since it uses less digits than its factorization.

13311769720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209264 (or 209260 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The spelling of 13311769720 in words is "thirteen billion, three hundred eleven million, seven hundred sixty-nine thousand, seven hundred twenty".