66484150731 has 16 divisors (see below), whose sum is σ = 99246913920. Its totient is φ = 43984423080.

The previous prime is 66484150723. The next prime is 66484150793. The reversal of 66484150731 is 13705148466.

66484150731 is a `hidden beast` number, since 6 + 64 + 84 + 1 + 507 + 3 + 1 = 666.

It is not a de Polignac number, because 66484150731 - 2³ = 66484150723 is a prime.

It is a super-2 number, since 2×66484150731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66484150631) 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, 9394845 + ... + 9401918.

It is an arithmetic number, because the mean of its divisors is an integer number (6202932120).

Almost surely, 2^66484150731 is an apocalyptic number.

66484150731 is a deficient number, since it is larger than the sum of its proper divisors (32762763189).

66484150731 is a wasteful number, since it uses less digits than its factorization.

66484150731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796903 (or 18796897 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 66484150731 in words is "sixty-six billion, four hundred eighty-four million, one hundred fifty thousand, seven hundred thirty-one".