66462696557 has 8 divisors (see below), whose sum is σ = 69385282560. Its totient is φ = 63542852560.

The previous prime is 66462696551. The next prime is 66462696571. The reversal of 66462696557 is 75569626466.

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

It is not a de Polignac number, because 66462696557 - 2⁶ = 66462696493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66462696557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66462696551) 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, 635882 + ... + 732987.

It is an arithmetic number, because the mean of its divisors is an integer number (8673160320).

Almost surely, 2^66462696557 is an apocalyptic number.

It is an amenable number.

66462696557 is a deficient number, since it is larger than the sum of its proper divisors (2922586003).

66462696557 is a wasteful number, since it uses less digits than its factorization.

66462696557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371003.

The product of its digits is 97977600, while the sum is 62.

The spelling of 66462696557 in words is "sixty-six billion, four hundred sixty-two million, six hundred ninety-six thousand, five hundred fifty-seven".