77616826228 has 24 divisors (see below), whose sum is σ = 141599291904. Its totient is φ = 37184676000.

The previous prime is 77616826213. The next prime is 77616826241. The reversal of 77616826228 is 82262861677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3086200 + ... + 3111247.

It is an arithmetic number, because the mean of its divisors is an integer number (5899970496).

Almost surely, 2^77616826228 is an apocalyptic number.

It is an amenable number.

77616826228 is a deficient number, since it is larger than the sum of its proper divisors (63982465676).

77616826228 is a wasteful number, since it uses less digits than its factorization.

77616826228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6197583 (or 6197581 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 55.

The spelling of 77616826228 in words is "seventy-seven billion, six hundred sixteen million, eight hundred twenty-six thousand, two hundred twenty-eight".