13345566690 has 64 divisors (see below), whose sum is σ = 33529946112. Its totient is φ = 3393086400.

The previous prime is 13345566677. The next prime is 13345566697. The reversal of 13345566690 is 9666554331.

It is a super-2 number, since 2×13345566690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13345566697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183495 + ... + 245685.

It is an arithmetic number, because the mean of its divisors is an integer number (523905408).

Almost surely, 2^13345566690 is an apocalyptic number.

13345566690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13345566690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16764973056).

13345566690 is an abundant number, since it is smaller than the sum of its proper divisors (20184379422).

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

13345566690 is a wasteful number, since it uses less digits than its factorization.

13345566690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62535.

The product of its (nonzero) digits is 1749600, while the sum is 48.

The spelling of 13345566690 in words is "thirteen billion, three hundred forty-five million, five hundred sixty-six thousand, six hundred ninety".