77728024342 has 16 divisors (see below), whose sum is σ = 123669694512. Its totient is φ = 36512915200.

The previous prime is 77728024321. The next prime is 77728024351. The reversal of 77728024342 is 24342082777.

It is a super-2 number, since 2×77728024342² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77728024292 and 77728024301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2011159 + ... + 2049442.

It is an arithmetic number, because the mean of its divisors is an integer number (7729355907).

Almost surely, 2^77728024342 is an apocalyptic number.

77728024342 is a deficient number, since it is larger than the sum of its proper divisors (45941670170).

77728024342 is a wasteful number, since it uses less digits than its factorization.

77728024342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061183.

The product of its (nonzero) digits is 1053696, while the sum is 46.

The spelling of 77728024342 in words is "seventy-seven billion, seven hundred twenty-eight million, twenty-four thousand, three hundred forty-two".