777006677042 has 4 divisors (see below), whose sum is σ = 1165510015566. Its totient is φ = 388503338520.

The previous prime is 777006677009. The next prime is 777006677071. The reversal of 777006677042 is 240776600777.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240776600777 = 233 ⋅1033375969.

It can be written as a sum of positive squares in only one way, i.e., 776282582761 + 724094281 = 881069^2 + 26909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194251669259 + ... + 194251669262.

Almost surely, 2^777006677042 is an apocalyptic number.

777006677042 is a deficient number, since it is larger than the sum of its proper divisors (388503338524).

777006677042 is a wasteful number, since it uses less digits than its factorization.

777006677042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388503338523.

The product of its (nonzero) digits is 4840416, while the sum is 53.

The spelling of 777006677042 in words is "seven hundred seventy-seven billion, six million, six hundred seventy-seven thousand, forty-two".