77802273303858 has 24 divisors (see below), whose sum is σ = 168863743987068. Its totient is φ = 25889144666112.

The previous prime is 77802273303851. The next prime is 77802273303967. The reversal of 77802273303858 is 85830337220877.

77802273303858 is a `hidden beast` number, since 7 + 7 + 8 + 0 + 2 + 273 + 303 + 8 + 58 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 76595806121409 + 1206467182449 = 8751903^2 + 1098393^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77802273303795 and 77802273303804.

It is not an unprimeable number, because it can be changed into a prime (77802273303851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3745525591 + ... + 3745546362.

Almost surely, 2^{77802273303858} is an apocalyptic number.

77802273303858 is an abundant number, since it is smaller than the sum of its proper divisors (91061470683210).

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

77802273303858 is a wasteful number, since it uses less digits than its factorization.

77802273303858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491072538 (or 7491072535 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 63.

The spelling of 77802273303858 in words is "seventy-seven trillion, eight hundred two billion, two hundred seventy-three million, three hundred three thousand, eight hundred fifty-eight".