66029469444 has 81 divisors (see below), whose sum is σ = 168843451413. Its totient is φ = 21757486464.

The previous prime is 66029469437. The next prime is 66029469449. The reversal of 66029469444 is 44496492066.

It is a happy number.

The square root of 66029469444 is 256962.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1163492100 + 64865977344 = 34110^2 + 254688^2 .

It is a super-2 number, since 2×66029469444² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66029469449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 174220047 + ... + 174220425.

Almost surely, 2^66029469444 is an apocalyptic number.

66029469444 is the 256962-nd square number.

It is an amenable number.

66029469444 is an abundant number, since it is smaller than the sum of its proper divisors (102813981969).

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

66029469444 is a wasteful number, since it uses less digits than its factorization.

66029469444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 66029469444 in words is "sixty-six billion, twenty-nine million, four hundred sixty-nine thousand, four hundred forty-four".