13257066700 has 72 divisors (see below), whose sum is σ = 29687117264. Its totient is φ = 5134752000.

The previous prime is 13257066673. The next prime is 13257066721. The reversal of 13257066700 is 766075231.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 13257066700.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 772210 + ... + 789190.

Almost surely, 2^13257066700 is an apocalyptic number.

13257066700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13257066700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14843558632).

13257066700 is an abundant number, since it is smaller than the sum of its proper divisors (16430050564).

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

13257066700 is a wasteful number, since it uses less digits than its factorization.

13257066700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17243 (or 17236 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 13257066700 in words is "thirteen billion, two hundred fifty-seven million, sixty-six thousand, seven hundred".