66107255565157 has 8 divisors (see below), whose sum is σ = 67656195068000. Its totient is φ = 64558841583600.

The previous prime is 66107255565047. The next prime is 66107255565167. The reversal of 66107255565157 is 75156555270166.

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-66107255565157 is a prime.

It is a super-2 number, since 2×66107255565157² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66107255565095 and 66107255565104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66107255565167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131125782 + ... + 131628967.

It is an arithmetic number, because the mean of its divisors is an integer number (8457024383500).

Almost surely, 2^{66107255565157} is an apocalyptic number.

It is an amenable number.

66107255565157 is a deficient number, since it is larger than the sum of its proper divisors (1548939502843).

66107255565157 is a wasteful number, since it uses less digits than its factorization.

66107255565157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262760643.

The product of its (nonzero) digits is 66150000, while the sum is 61.

The spelling of 66107255565157 in words is "sixty-six trillion, one hundred seven billion, two hundred fifty-five million, five hundred sixty-five thousand, one hundred fifty-seven".