66150515492 has 12 divisors (see below), whose sum is σ = 115812533340. Its totient is φ = 33061220256.

The previous prime is 66150515437. The next prime is 66150515513. The reversal of 66150515492 is 29451505166.

It can be written as a sum of positive squares in 2 ways, for example, as 17642214976 + 48508300516 = 132824^2 + 220246^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3498767 + ... + 3517622.

It is an arithmetic number, because the mean of its divisors is an integer number (9651044445).

Almost surely, 2^66150515492 is an apocalyptic number.

It is an amenable number.

66150515492 is a deficient number, since it is larger than the sum of its proper divisors (49662017848).

66150515492 is a wasteful number, since it uses less digits than its factorization.

66150515492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018750 (or 7018748 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 66150515492 in words is "sixty-six billion, one hundred fifty million, five hundred fifteen thousand, four hundred ninety-two".