66101511151 has 4 divisors (see below), whose sum is σ = 71186242792. Its totient is φ = 61016779512.

The previous prime is 66101511121. The next prime is 66101511163. The reversal of 66101511151 is 15111510166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15111510166 = 2 ⋅7555755083.

It is not a de Polignac number, because 66101511151 - 2¹⁹ = 66100986863 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 (66101511101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542365801 + ... + 2542365826.

It is an arithmetic number, because the mean of its divisors is an integer number (17796560698).

Almost surely, 2^66101511151 is an apocalyptic number.

66101511151 is a deficient number, since it is larger than the sum of its proper divisors (5084731641).

66101511151 is a wasteful number, since it uses less digits than its factorization.

66101511151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084731640.

The product of its (nonzero) digits is 900, while the sum is 28.

The spelling of 66101511151 in words is "sixty-six billion, one hundred one million, five hundred eleven thousand, one hundred fifty-one".