66747224136 has 32 divisors (see below), whose sum is σ = 166881873600. Its totient is φ = 22247232960.

The previous prime is 66747224101. The next prime is 66747224149. The reversal of 66747224136 is 63142274766.

It is a super-2 number, since 2×66747224136² (a number of 22 digits) contains 22 as substring.

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, 198270 + ... + 415698.

It is an arithmetic number, because the mean of its divisors is an integer number (5215058550).

Almost surely, 2^66747224136 is an apocalyptic number.

It is an amenable number.

66747224136 is an abundant number, since it is smaller than the sum of its proper divisors (100134649464).

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

66747224136 is a wasteful number, since it uses less digits than its factorization.

66747224136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230229 (or 230225 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 48.

The spelling of 66747224136 in words is "sixty-six billion, seven hundred forty-seven million, two hundred twenty-four thousand, one hundred thirty-six".