66962426900 has 18 divisors (see below), whose sum is σ = 145308466590. Its totient is φ = 26784970720.

The previous prime is 66962426899. The next prime is 66962426911. The reversal of 66962426900 is 962426966.

It can be written as a sum of positive squares in 3 ways, for example, as 1792506244 + 65169920656 = 42338^2 + 255284^2 .

It is a super-2 number, since 2×66962426900² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 334812035 + ... + 334812234.

Almost surely, 2^66962426900 is an apocalyptic number.

It is an amenable number.

66962426900 is an abundant number, since it is smaller than the sum of its proper divisors (78346039690).

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

66962426900 is a wasteful number, since it uses less digits than its factorization.

66962426900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669624283 (or 669624276 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 66962426900 in words is "sixty-six billion, nine hundred sixty-two million, four hundred twenty-six thousand, nine hundred".