77703677042 has 8 divisors (see below), whose sum is σ = 118754676396. Its totient is φ = 38118784912.

The previous prime is 77703677041. The next prime is 77703677081. The reversal of 77703677042 is 24077630777.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77316807481 + 386869561 = 278059^2 + 19669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×77703677042² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77703677041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366526673 + ... + 366526884.

Almost surely, 2^77703677042 is an apocalyptic number.

77703677042 is a deficient number, since it is larger than the sum of its proper divisors (41050999354).

77703677042 is a wasteful number, since it uses less digits than its factorization.

77703677042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733053612.

The product of its (nonzero) digits is 2420208, while the sum is 50.

The spelling of 77703677042 in words is "seventy-seven billion, seven hundred three million, six hundred seventy-seven thousand, forty-two".