66126700552 has 32 divisors (see below), whose sum is σ = 135279849600. Its totient is φ = 30052993600.

The previous prime is 66126700489. The next prime is 66126700553. The reversal of 66126700552 is 25500762166.

It is not an unprimeable number, because it can be changed into a prime (66126700553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558402 + ... + 666382.

It is an arithmetic number, because the mean of its divisors is an integer number (4227495300).

Almost surely, 2^66126700552 is an apocalyptic number.

It is an amenable number.

66126700552 is an abundant number, since it is smaller than the sum of its proper divisors (69153149048).

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

66126700552 is a wasteful number, since it uses less digits than its factorization.

66126700552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114957 (or 114953 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 66126700552 in words is "sixty-six billion, one hundred twenty-six million, seven hundred thousand, five hundred fifty-two".