66007870854 has 32 divisors (see below), whose sum is σ = 139019280000. Its totient is φ = 20836289664.

The previous prime is 66007870853. The next prime is 66007870871. The reversal of 66007870854 is 45807870066.

66007870854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66007870797 and 66007870806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66007870853) 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, 175422 + ... + 403470.

It is an arithmetic number, because the mean of its divisors is an integer number (4344352500).

Almost surely, 2^66007870854 is an apocalyptic number.

66007870854 is an abundant number, since it is smaller than the sum of its proper divisors (73011409146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66007870854 is a wasteful number, since it uses less digits than its factorization.

66007870854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230612.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 66007870854 in words is "sixty-six billion, seven million, eight hundred seventy thousand, eight hundred fifty-four".