66001006157 has 2 divisors, whose sum is σ = 66001006158. Its totient is φ = 66001006156.

The previous prime is 66001006151. The next prime is 66001006189. The reversal of 66001006157 is 75160010066.

It is an a-pointer prime, because the next prime (66001006189) can be obtained adding 66001006157 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62645584681 + 3355421476 = 250291^2 + 57926^2 .

It is a cyclic number.

It is not a de Polignac number, because 66001006157 - 2⁸ = 66001005901 is a prime.

It is a super-2 number, since 2×66001006157² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66001006151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000503078 + 33000503079.

It is an arithmetic number, because the mean of its divisors is an integer number (33000503079).

Almost surely, 2^66001006157 is an apocalyptic number.

It is an amenable number.

66001006157 is a deficient number, since it is larger than the sum of its proper divisors (1).

66001006157 is an equidigital number, since it uses as much as digits as its factorization.

66001006157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The spelling of 66001006157 in words is "sixty-six billion, one million, six thousand, one hundred fifty-seven".