665745150454 has 8 divisors (see below), whose sum is σ = 1033052819760. Its totient is φ = 321394210536.

The previous prime is 665745150451. The next prime is 665745150467. The reversal of 665745150454 is 454051547566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×665745150454² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665745150451) 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 3 ways as a sum of consecutive naturals, for example, 5739182274 + ... + 5739182389.

It is an arithmetic number, because the mean of its divisors is an integer number (129131602470).

Almost surely, 2^665745150454 is an apocalyptic number.

665745150454 is a deficient number, since it is larger than the sum of its proper divisors (367307669306).

665745150454 is a wasteful number, since it uses less digits than its factorization.

665745150454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11478364694.

The product of its (nonzero) digits is 10080000, while the sum is 52.

The spelling of 665745150454 in words is "six hundred sixty-five billion, seven hundred forty-five million, one hundred fifty thousand, four hundred fifty-four".