77251622076228 has 48 divisors (see below), whose sum is σ = 182118464317440. Its totient is φ = 25485479911584.

The previous prime is 77251622076227. The next prime is 77251622076247. The reversal of 77251622076228 is 82267022615277.

It is a happy number.

It is a super-4 number, since 4×77251622076228⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (77251622076227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82157400 + ... + 83092367.

It is an arithmetic number, because the mean of its divisors is an integer number (3794134673280).

Almost surely, 2^{77251622076228} is an apocalyptic number.

It is an amenable number.

77251622076228 is an abundant number, since it is smaller than the sum of its proper divisors (104866842241212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77251622076228 is a wasteful number, since it uses less digits than its factorization.

77251622076228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165250176 (or 165250174 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 57.

The spelling of 77251622076228 in words is "seventy-seven trillion, two hundred fifty-one billion, six hundred twenty-two million, seventy-six thousand, two hundred twenty-eight".