77855127948342 has 32 divisors (see below), whose sum is σ = 183188536351200. Its totient is φ = 24425138179584.

The previous prime is 77855127948341. The next prime is 77855127948343. The reversal of 77855127948342 is 24384972155877.

77855127948342 is a `hidden beast` number, since 7 + 7 + 8 + 5 + 5 + 1 + 279 + 4 + 8 + 342 = 666.

It is an interprime number because it is at equal distance from previous prime (77855127948341) and next prime (77855127948343).

It is a super-2 number, since 2×77855127948342² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77855127948341) 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, 42404752867 + ... + 42404754702.

It is an arithmetic number, because the mean of its divisors is an integer number (5724641760975).

Almost surely, 2^{77855127948342} is an apocalyptic number.

77855127948342 is an abundant number, since it is smaller than the sum of its proper divisors (105333408402858).

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

77855127948342 is a wasteful number, since it uses less digits than its factorization.

77855127948342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84809507597 (or 84809507591 counting only the distinct ones).

The product of its digits is 948326400, while the sum is 72.

The spelling of 77855127948342 in words is "seventy-seven trillion, eight hundred fifty-five billion, one hundred twenty-seven million, nine hundred forty-eight thousand, three hundred forty-two".