77755603258 has 16 divisors (see below), whose sum is σ = 117921256704. Its totient is φ = 38449387600.

The previous prime is 77755603201. The next prime is 77755603309. The reversal of 77755603258 is 85230655777.

It is a junction number, because it is equal to n+sod(n) for n = 77755603199 and 77755603208.

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, 37810 + ... + 396157.

It is an arithmetic number, because the mean of its divisors is an integer number (7370078544).

Almost surely, 2^77755603258 is an apocalyptic number.

77755603258 is a deficient number, since it is larger than the sum of its proper divisors (40165653446).

77755603258 is a wasteful number, since it uses less digits than its factorization.

77755603258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434957.

The product of its (nonzero) digits is 12348000, while the sum is 55.

The spelling of 77755603258 in words is "seventy-seven billion, seven hundred fifty-five million, six hundred three thousand, two hundred fifty-eight".