77425643576 has 16 divisors (see below), whose sum is σ = 145177617600. Its totient is φ = 38711612224.

The previous prime is 77425643569. The next prime is 77425643597. The reversal of 77425643576 is 67534652477.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158060 + ... + 424068.

It is an arithmetic number, because the mean of its divisors is an integer number (9073601100).

Almost surely, 2^77425643576 is an apocalyptic number.

It is an amenable number.

77425643576 is a deficient number, since it is larger than the sum of its proper divisors (67751974024).

77425643576 is a wasteful number, since it uses less digits than its factorization.

77425643576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302398 (or 302394 counting only the distinct ones).

The product of its digits is 29635200, while the sum is 56.

The spelling of 77425643576 in words is "seventy-seven billion, four hundred twenty-five million, six hundred forty-three thousand, five hundred seventy-six".