66429901152 has 72 divisors (see below), whose sum is σ = 192111945480. Its totient is φ = 21767984640.

The previous prime is 66429901141. The next prime is 66429901171. The reversal of 66429901152 is 25110992466.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 66429901098 and 66429901107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1937749 + ... + 1971732.

It is an arithmetic number, because the mean of its divisors is an integer number (2668221465).

Almost surely, 2^66429901152 is an apocalyptic number.

It is an amenable number.

66429901152 is an abundant number, since it is smaller than the sum of its proper divisors (125682044328).

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

66429901152 is a wasteful number, since it uses less digits than its factorization.

66429901152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909556 (or 3909545 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 66429901152 in words is "sixty-six billion, four hundred twenty-nine million, nine hundred one thousand, one hundred fifty-two".