66016506157 has 8 divisors (see below), whose sum is σ = 75465964800. Its totient is φ = 56571679824.

The previous prime is 66016506139. The next prime is 66016506187. The reversal of 66016506157 is 75160561066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66016506157 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 (66016506137) 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 7 ways as a sum of consecutive naturals, for example, 1127482 + ... + 1184587.

It is an arithmetic number, because the mean of its divisors is an integer number (9433245600).

Almost surely, 2^66016506157 is an apocalyptic number.

It is an amenable number.

66016506157 is a deficient number, since it is larger than the sum of its proper divisors (9449458643).

66016506157 is a wasteful number, since it uses less digits than its factorization.

66016506157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316155.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 66016506157 in words is "sixty-six billion, sixteen million, five hundred six thousand, one hundred fifty-seven".