66200013824 has 88 divisors (see below), whose sum is σ = 153063982848. Its totient is φ = 28029358080.

The previous prime is 66200013811. The next prime is 66200013853. The reversal of 66200013824 is 42831000266.

It is a super-2 number, since 2×66200013824² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539309 + ... + 650579.

Almost surely, 2^66200013824 is an apocalyptic number.

66200013824 is a gapful number since it is divisible by the number (64) 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 66200013824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76531991424).

66200013824 is an abundant number, since it is smaller than the sum of its proper divisors (86863969024).

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

66200013824 is a wasteful number, since it uses less digits than its factorization.

66200013824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111381 (or 111363 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 66200013824 in words is "sixty-six billion, two hundred million, thirteen thousand, eight hundred twenty-four".