66037289551 has 4 divisors (see below), whose sum is σ = 66046729104. Its totient is φ = 66027850000.

The previous prime is 66037289543. The next prime is 66037289567. The reversal of 66037289551 is 15598273066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15598273066 = 2 ⋅7799136533.

It is a cyclic number.

It is not a de Polignac number, because 66037289551 - 2³ = 66037289543 is a prime.

It is a super-2 number, since 2×66037289551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66037289501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4709275 + ... + 4723276.

It is an arithmetic number, because the mean of its divisors is an integer number (16511682276).

Almost surely, 2^66037289551 is an apocalyptic number.

66037289551 is a deficient number, since it is larger than the sum of its proper divisors (9439553).

66037289551 is an equidigital number, since it uses as much as digits as its factorization.

66037289551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9439552.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 66037289551 in words is "sixty-six billion, thirty-seven million, two hundred eighty-nine thousand, five hundred fifty-one".