66897898058 has 16 divisors (see below), whose sum is σ = 106783531200. Its totient is φ = 31323162816.

The previous prime is 66897898037. The next prime is 66897898069. The reversal of 66897898058 is 85089879866.

It is a super-3 number, since 3×66897898058³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4936916 + ... + 4950447.

It is an arithmetic number, because the mean of its divisors is an integer number (6673970700).

Almost surely, 2^66897898058 is an apocalyptic number.

66897898058 is a deficient number, since it is larger than the sum of its proper divisors (39885633142).

66897898058 is a wasteful number, since it uses less digits than its factorization.

66897898058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887581.

The product of its (nonzero) digits is 418037760, while the sum is 74.

The spelling of 66897898058 in words is "sixty-six billion, eight hundred ninety-seven million, eight hundred ninety-eight thousand, fifty-eight".