66296160779258 has 4 divisors (see below), whose sum is σ = 99444241168890. Its totient is φ = 33148080389628.

The previous prime is 66296160779243. The next prime is 66296160779287. The reversal of 66296160779258 is 85297706169266.

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

It can be written as a sum of positive squares in only one way, i.e., 56642978979409 + 9653181799849 = 7526153^2 + 3106957^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16574040194813 + ... + 16574040194816.

Almost surely, 2^{66296160779258} is an apocalyptic number.

66296160779258 is a deficient number, since it is larger than the sum of its proper divisors (33148080389632).

66296160779258 is a wasteful number, since it uses less digits than its factorization.

66296160779258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33148080389631.

The product of its (nonzero) digits is 823011840, while the sum is 74.

The spelling of 66296160779258 in words is "sixty-six trillion, two hundred ninety-six billion, one hundred sixty million, seven hundred seventy-nine thousand, two hundred fifty-eight".