66207011552 has 48 divisors (see below), whose sum is σ = 142284304512. Its totient is φ = 30075112320.

The previous prime is 66207011539. The next prime is 66207011579. The reversal of 66207011552 is 25511070266.

It is a super-2 number, since 2×66207011552² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507143 + ... + 624185.

It is an arithmetic number, because the mean of its divisors is an integer number (2964256344).

Almost surely, 2^66207011552 is an apocalyptic number.

It is an amenable number.

66207011552 is an abundant number, since it is smaller than the sum of its proper divisors (76077292960).

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

66207011552 is a wasteful number, since it uses less digits than its factorization.

66207011552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118671 (or 118663 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 66207011552 in words is "sixty-six billion, two hundred seven million, eleven thousand, five hundred fifty-two".