66026654651 has 8 divisors (see below), whose sum is σ = 67906541808. Its totient is φ = 64159600000.

The previous prime is 66026654609. The next prime is 66026654657. The reversal of 66026654651 is 15645662066.

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 66026654651 - 2¹⁸ = 66026392507 is a prime.

It is a super-3 number, since 3×66026654651³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66026654596 and 66026654605.

It is not an unprimeable number, because it can be changed into a prime (66026654657) 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, 3197690 + ... + 3218271.

It is an arithmetic number, because the mean of its divisors is an integer number (8488317726).

Almost surely, 2^66026654651 is an apocalyptic number.

66026654651 is a deficient number, since it is larger than the sum of its proper divisors (1879887157).

66026654651 is a wasteful number, since it uses less digits than its factorization.

66026654651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416253.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 66026654651 in words is "sixty-six billion, twenty-six million, six hundred fifty-four thousand, six hundred fifty-one".