66612254151 has 4 divisors (see below), whose sum is σ = 88816338872. Its totient is φ = 44408169432.

The previous prime is 66612254143. The next prime is 66612254197. The reversal of 66612254151 is 15145221666.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66612254151 - 2³ = 66612254143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66612254101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11102042356 + ... + 11102042361.

It is an arithmetic number, because the mean of its divisors is an integer number (22204084718).

Almost surely, 2^66612254151 is an apocalyptic number.

66612254151 is a deficient number, since it is larger than the sum of its proper divisors (22204084721).

66612254151 is a wasteful number, since it uses less digits than its factorization.

66612254151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22204084720.

The product of its digits is 86400, while the sum is 39.

The spelling of 66612254151 in words is "sixty-six billion, six hundred twelve million, two hundred fifty-four thousand, one hundred fifty-one".