77924222142 has 32 divisors (see below), whose sum is σ = 167864579232. Its totient is φ = 23972713344.

The previous prime is 77924222099. The next prime is 77924222153. The reversal of 77924222142 is 24122242977.

It is a junction number, because it is equal to n+sod(n) for n = 77924222094 and 77924222103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410028 + ... + 569184.

It is an arithmetic number, because the mean of its divisors is an integer number (5245768101).

Almost surely, 2^77924222142 is an apocalyptic number.

77924222142 is an abundant number, since it is smaller than the sum of its proper divisors (89940357090).

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

77924222142 is a wasteful number, since it uses less digits than its factorization.

77924222142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165452.

The product of its digits is 225792, while the sum is 42.

The spelling of 77924222142 in words is "seventy-seven billion, nine hundred twenty-four million, two hundred twenty-two thousand, one hundred forty-two".