66151011 has 4 divisors (see below), whose sum is σ = 88201352. Its totient is φ = 44100672.

The previous prime is 66150947. The next prime is 66151031. The reversal of 66151011 is 11015166.

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

It is not a de Polignac number, because 66151011 - 2⁶ = 66150947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66151031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11025166 + ... + 11025171.

It is an arithmetic number, because the mean of its divisors is an integer number (22050338).

Almost surely, 2^66151011 is an apocalyptic number.

66151011 is a deficient number, since it is larger than the sum of its proper divisors (22050341).

66151011 is a wasteful number, since it uses less digits than its factorization.

66151011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22050340.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 66151011 is about 8133.3271789594. The cubic root of 66151011 is about 404.4319853170.

Adding to 66151011 its reverse (11015166), we get a palindrome (77166177).

It can be divided in two parts, 6615 and 1011, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 66151011 in words is "sixty-six million, one hundred fifty-one thousand, eleven".