77479633628 has 6 divisors (see below), whose sum is σ = 135589358856. Its totient is φ = 38739816812.

The previous prime is 77479633499. The next prime is 77479633663. The reversal of 77479633628 is 82633697477.

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, 9684954200 + ... + 9684954207.

It is an arithmetic number, because the mean of its divisors is an integer number (22598226476).

Almost surely, 2^77479633628 is an apocalyptic number.

It is an amenable number.

77479633628 is a deficient number, since it is larger than the sum of its proper divisors (58109725228).

77479633628 is a wasteful number, since it uses less digits than its factorization.

77479633628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19369908411 (or 19369908409 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 62.

The spelling of 77479633628 in words is "seventy-seven billion, four hundred seventy-nine million, six hundred thirty-three thousand, six hundred twenty-eight".