75946938646 has 4 divisors (see below), whose sum is σ = 113920407972. Its totient is φ = 37973469322.

The previous prime is 75946938619. The next prime is 75946938647. The reversal of 75946938646 is 64683964957.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75946938647) 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 as a sum of consecutive naturals, namely, 18986734660 + ... + 18986734663.

It is an arithmetic number, because the mean of its divisors is an integer number (28480101993).

Almost surely, 2^75946938646 is an apocalyptic number.

75946938646 is a deficient number, since it is larger than the sum of its proper divisors (37973469326).

75946938646 is a wasteful number, since it uses less digits than its factorization.

75946938646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37973469325.

The product of its digits is 235146240, while the sum is 67.

The spelling of 75946938646 in words is "seventy-five billion, nine hundred forty-six million, nine hundred thirty-eight thousand, six hundred forty-six".