66136543312441 has 8 divisors (see below), whose sum is σ = 75586018463424. Its totient is φ = 56687417545200.

The previous prime is 66136543312409. The next prime is 66136543312447. The reversal of 66136543312441 is 14421334563166.

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 66136543312441 - 2⁵ = 66136543312409 is a prime.

It is a super-2 number, since 2×66136543312441² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66136543312447) 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, 86940175 + ... + 87697588.

It is an arithmetic number, because the mean of its divisors is an integer number (9448252307928).

Almost surely, 2^{66136543312441} is an apocalyptic number.

It is an amenable number.

66136543312441 is a deficient number, since it is larger than the sum of its proper divisors (9449475150983).

66136543312441 is a wasteful number, since it uses less digits than its factorization.

66136543312441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174691871.

The product of its digits is 3732480, while the sum is 49.

The spelling of 66136543312441 in words is "sixty-six trillion, one hundred thirty-six billion, five hundred forty-three million, three hundred twelve thousand, four hundred forty-one".