66477078833 has 8 divisors (see below), whose sum is σ = 72556752000. Its totient is φ = 60403456080.

The previous prime is 66477078821. The next prime is 66477078887. The reversal of 66477078833 is 33887077466.

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

It is not a de Polignac number, because 66477078833 - 2¹⁶ = 66477013297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66477078893) 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, 1489610 + ... + 1533587.

It is an arithmetic number, because the mean of its divisors is an integer number (9069594000).

Almost surely, 2^66477078833 is an apocalyptic number.

It is an amenable number.

66477078833 is a deficient number, since it is larger than the sum of its proper divisors (6079673167).

66477078833 is a wasteful number, since it uses less digits than its factorization.

66477078833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025207.

The product of its (nonzero) digits is 28449792, while the sum is 59.

The spelling of 66477078833 in words is "sixty-six billion, four hundred seventy-seven million, seventy-eight thousand, eight hundred thirty-three".