66310259472 has 80 divisors (see below), whose sum is σ = 190365732480. Its totient is φ = 22099851648.

The previous prime is 66310259461. The next prime is 66310259479. The reversal of 66310259472 is 27495201366.

66310259472 is a `hidden beast` number, since 6 + 631 + 0 + 2 + 5 + 9 + 4 + 7 + 2 = 666.

It is a super-2 number, since 2×66310259472² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66310259479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5291358 + ... + 5303874.

It is an arithmetic number, because the mean of its divisors is an integer number (2379571656).

Almost surely, 2^66310259472 is an apocalyptic number.

It is an amenable number.

66310259472 is an abundant number, since it is smaller than the sum of its proper divisors (124055473008).

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

66310259472 is a wasteful number, since it uses less digits than its factorization.

66310259472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24797 (or 24785 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 66310259472 in words is "sixty-six billion, three hundred ten million, two hundred fifty-nine thousand, four hundred seventy-two".