66307462720 has 56 divisors (see below), whose sum is σ = 158590390464. Its totient is φ = 26406114816.

The previous prime is 66307462621. The next prime is 66307462729. The reversal of 66307462720 is 2726470366.

It is a happy number.

It is a super-2 number, since 2×66307462720² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66307462729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383772 + ... + 529051.

Almost surely, 2^66307462720 is an apocalyptic number.

It is an amenable number.

66307462720 is an abundant number, since it is smaller than the sum of its proper divisors (92282927744).

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

66307462720 is a wasteful number, since it uses less digits than its factorization.

66307462720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913067 (or 913057 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66307462720 in words is "sixty-six billion, three hundred seven million, four hundred sixty-two thousand, seven hundred twenty".