66200484006400 has 60 divisors (see below), whose sum is σ = 164016871070382. Its totient is φ = 26480193597440.

The previous prime is 66200484006361. The next prime is 66200484006401. The reversal of 66200484006400 is 460048400266.

It can be written as a sum of positive squares in 3 ways, for example, as 44817776273664 + 21382707732736 = 6694608^2 + 4624144^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66200484006401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2585943607 + ... + 2585969206.

Almost surely, 2^{66200484006400} is an apocalyptic number.

It is an amenable number.

66200484006400 is an abundant number, since it is smaller than the sum of its proper divisors (97816387063982).

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

66200484006400 is an equidigital number, since it uses as much as digits as its factorization.

66200484006400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171912841 (or 5171912820 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 66200484006400 in words is "sixty-six trillion, two hundred billion, four hundred eighty-four million, six thousand, four hundred".