66151442 has 16 divisors (see below), whose sum is σ = 113538240. Its totient is φ = 28316688.

The previous prime is 66151433. The next prime is 66151451. The reversal of 66151442 is 24415166.

It is an interprime number because it is at equal distance from previous prime (66151433) and next prime (66151451).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11948 + ... + 16584.

It is an arithmetic number, because the mean of its divisors is an integer number (7096140).

Almost surely, 2^66151442 is an apocalyptic number.

66151442 is a deficient number, since it is larger than the sum of its proper divisors (47386798).

66151442 is a wasteful number, since it uses less digits than its factorization.

66151442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665.

The product of its digits is 5760, while the sum is 29.

The square root of 66151442 is about 8133.3536748380. The cubic root of 66151442 is about 404.4328636598.

The spelling of 66151442 in words is "sixty-six million, one hundred fifty-one thousand, four hundred forty-two".