77740950255 has 16 divisors (see below), whose sum is σ = 124393778304. Its totient is φ = 41459087520.

The previous prime is 77740950239. The next prime is 77740950269. The reversal of 77740950255 is 55205904777.

It is not a de Polignac number, because 77740950255 - 2⁴ = 77740950239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77740950198 and 77740950207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72660 + ... + 400950.

It is an arithmetic number, because the mean of its divisors is an integer number (7774611144).

Almost surely, 2^77740950255 is an apocalyptic number.

77740950255 is a deficient number, since it is larger than the sum of its proper divisors (46652828049).

77740950255 is a wasteful number, since it uses less digits than its factorization.

77740950255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344086.

The product of its (nonzero) digits is 3087000, while the sum is 51.

The spelling of 77740950255 in words is "seventy-seven billion, seven hundred forty million, nine hundred fifty thousand, two hundred fifty-five".