66103151 has 4 divisors (see below), whose sum is σ = 68382600. Its totient is φ = 63823704.

The previous prime is 66103139. The next prime is 66103181. The reversal of 66103151 is 15130166.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15130166 = 2 ⋅7565083.

It is a cyclic number.

It is not a de Polignac number, because 66103151 - 2¹⁴ = 66086767 is a prime.

It is a super-3 number, since 3×66103151³ (a number of 24 digits) contains 333 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 (66103181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139681 + ... + 1139738.

It is an arithmetic number, because the mean of its divisors is an integer number (17095650).

Almost surely, 2^66103151 is an apocalyptic number.

66103151 is a deficient number, since it is larger than the sum of its proper divisors (2279449).

66103151 is a wasteful number, since it uses less digits than its factorization.

66103151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279448.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 66103151 is about 8130.3844312554. The cubic root of 66103151 is about 404.3344267943.

The spelling of 66103151 in words is "sixty-six million, one hundred three thousand, one hundred fifty-one".