62728061778 has 12 divisors (see below), whose sum is σ = 135910800558. Its totient is φ = 20909353920.

The previous prime is 62728061761. The next prime is 62728061797. The reversal of 62728061778 is 87716082726.

It is a happy number.

62728061778 is a `hidden beast` number, since 627 + 2 + 8 + 0 + 6 + 1 + 7 + 7 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62721696249 + 6365529 = 250443^2 + 2523^2 .

It is a super-3 number, since 3×62728061778³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1742446143 + ... + 1742446178.

Almost surely, 2^62728061778 is an apocalyptic number.

62728061778 is an abundant number, since it is smaller than the sum of its proper divisors (73182738780).

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

62728061778 is a wasteful number, since it uses less digits than its factorization.

62728061778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484892329 (or 3484892326 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 62728061778 in words is "sixty-two billion, seven hundred twenty-eight million, sixty-one thousand, seven hundred seventy-eight".