66742957452 has 48 divisors (see below), whose sum is σ = 158726125152. Its totient is φ = 21820431360.

The previous prime is 66742957429. The next prime is 66742957459. The reversal of 66742957452 is 25475924766.

It is a junction number, because it is equal to n+sod(n) for n = 66742957392 and 66742957401.

It is not an unprimeable number, because it can be changed into a prime (66742957459) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2029702 + ... + 2062322.

It is an arithmetic number, because the mean of its divisors is an integer number (3306794274).

Almost surely, 2^66742957452 is an apocalyptic number.

It is an amenable number.

66742957452 is an abundant number, since it is smaller than the sum of its proper divisors (91983167700).

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

66742957452 is a wasteful number, since it uses less digits than its factorization.

66742957452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35898 (or 35896 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 57.

The spelling of 66742957452 in words is "sixty-six billion, seven hundred forty-two million, nine hundred fifty-seven thousand, four hundred fifty-two".