755664072947 has 16 divisors (see below), whose sum is σ = 921873369600. Its totient is φ = 604979383680.

The previous prime is 755664072907. The next prime is 755664072949. The reversal of 755664072947 is 749270466557.

It is a happy number.

It is not a de Polignac number, because 755664072947 - 2¹⁰ = 755664071923 is a prime.

It is a super-2 number, since 2×755664072947² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 755664072947.

It is not an unprimeable number, because it can be changed into a prime (755664072949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40002422 + ... + 40021307.

It is an arithmetic number, because the mean of its divisors is an integer number (57617085600).

Almost surely, 2^755664072947 is an apocalyptic number.

755664072947 is a deficient number, since it is larger than the sum of its proper divisors (166209296653).

755664072947 is a wasteful number, since it uses less digits than its factorization.

755664072947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80023826.

The product of its (nonzero) digits is 88905600, while the sum is 62.

The spelling of 755664072947 in words is "seven hundred fifty-five billion, six hundred sixty-four million, seventy-two thousand, nine hundred forty-seven".