75662543668 has 6 divisors (see below), whose sum is σ = 132409451426. Its totient is φ = 37831271832.

The previous prime is 75662543611. The next prime is 75662543687. The reversal of 75662543668 is 86634526657.

It can be written as a sum of positive squares in only one way, i.e., 71154495504 + 4508048164 = 266748^2 + 67142^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9457817955 + ... + 9457817962.

Almost surely, 2^75662543668 is an apocalyptic number.

It is an amenable number.

75662543668 is a deficient number, since it is larger than the sum of its proper divisors (56746907758).

75662543668 is a wasteful number, since it uses less digits than its factorization.

75662543668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18915635921 (or 18915635919 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 58.

The spelling of 75662543668 in words is "seventy-five billion, six hundred sixty-two million, five hundred forty-three thousand, six hundred sixty-eight".