66729339054 has 64 divisors (see below), whose sum is σ = 172929984000. Its totient is φ = 19065520152.

The previous prime is 66729339043. The next prime is 66729339067. The reversal of 66729339054 is 45093392766.

66729339054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66729339054² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1782832 + ... + 1819875.

It is an arithmetic number, because the mean of its divisors is an integer number (2702031000).

Almost surely, 2^66729339054 is an apocalyptic number.

66729339054 is an abundant number, since it is smaller than the sum of its proper divisors (106200644946).

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

66729339054 is a wasteful number, since it uses less digits than its factorization.

66729339054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602739 (or 3602719 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 54.

The spelling of 66729339054 in words is "sixty-six billion, seven hundred twenty-nine million, three hundred thirty-nine thousand, fifty-four".