66678573351 has 16 divisors (see below), whose sum is σ = 98832097280. Its totient is φ = 39709323360.

The previous prime is 66678573331. The next prime is 66678573389. The reversal of 66678573351 is 15337587666.

66678573351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66678573351 - 2⁵ = 66678573319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66678573291 and 66678573300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66678573331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27574711 + ... + 27577128.

It is an arithmetic number, because the mean of its divisors is an integer number (6177006080).

Almost surely, 2^66678573351 is an apocalyptic number.

66678573351 is a deficient number, since it is larger than the sum of its proper divisors (32153523929).

66678573351 is a wasteful number, since it uses less digits than its factorization.

66678573351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55151886.

The product of its digits is 19051200, while the sum is 57.

The spelling of 66678573351 in words is "sixty-six billion, six hundred seventy-eight million, five hundred seventy-three thousand, three hundred fifty-one".