13693966650 has 768 divisors, whose sum is σ = 50396774400. Its totient is φ = 2652549120.

The previous prime is 13693966639. The next prime is 13693966651. The reversal of 13693966650 is 5666939631.

It is a super-2 number, since 2×13693966650² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (13693966651) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 164987509 + ... + 164987591.

It is an arithmetic number, because the mean of its divisors is an integer number (65620800).

Almost surely, 2^13693966650 is an apocalyptic number.

13693966650 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 13693966650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25198387200).

13693966650 is an abundant number, since it is smaller than the sum of its proper divisors (36702807750).

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

13693966650 is a wasteful number, since it uses less digits than its factorization.

13693966650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 54.

The spelling of 13693966650 in words is "thirteen billion, six hundred ninety-three million, nine hundred sixty-six thousand, six hundred fifty".