66552142067 has 8 divisors (see below), whose sum is σ = 67616136624. Its totient is φ = 65492264448.

The previous prime is 66552142049. The next prime is 66552142093. The reversal of 66552142067 is 76024125566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66552142067 - 2¹⁰ = 66552141043 is a prime.

It is a super-2 number, since 2×66552142067² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66552142967) 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, 996638 + ... + 1061315.

It is an arithmetic number, because the mean of its divisors is an integer number (8452017078).

Almost surely, 2^66552142067 is an apocalyptic number.

66552142067 is a deficient number, since it is larger than the sum of its proper divisors (1063994557).

66552142067 is a wasteful number, since it uses less digits than its factorization.

66552142067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058469.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 66552142067 in words is "sixty-six billion, five hundred fifty-two million, one hundred forty-two thousand, sixty-seven".