66107255526653 has 8 divisors (see below), whose sum is σ = 74443361062656. Its totient is φ = 58158875829600.

The previous prime is 66107255526649. The next prime is 66107255526659. The reversal of 66107255526653 is 35662555270166.

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

It is a cyclic number.

It is not a de Polignac number, because 66107255526653 - 2² = 66107255526649 is a prime.

It is a super-2 number, since 2×66107255526653² (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 = 66107255526592 and 66107255526601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66107255526659) 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, 96931459376 + ... + 96931460057.

It is an arithmetic number, because the mean of its divisors is an integer number (9305420132832).

Almost surely, 2^{66107255526653} is an apocalyptic number.

It is an amenable number.

66107255526653 is a deficient number, since it is larger than the sum of its proper divisors (8336105536003).

66107255526653 is a wasteful number, since it uses less digits than its factorization.

66107255526653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193862919475.

The product of its (nonzero) digits is 68040000, while the sum is 59.

The spelling of 66107255526653 in words is "sixty-six trillion, one hundred seven billion, two hundred fifty-five million, five hundred twenty-six thousand, six hundred fifty-three".