77276997242 has 8 divisors (see below), whose sum is σ = 116207475636. Its totient is φ = 38541172032.

The previous prime is 77276997209. The next prime is 77276997269. The reversal of 77276997242 is 24279967277.

It can be written as a sum of positive squares in 2 ways, for example, as 77200066801 + 76930441 = 277849^2 + 8771^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48662303 + ... + 48663890.

Almost surely, 2^77276997242 is an apocalyptic number.

77276997242 is a deficient number, since it is larger than the sum of its proper divisors (38930478394).

77276997242 is a wasteful number, since it uses less digits than its factorization.

77276997242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97326592.

The product of its digits is 37340352, while the sum is 62.

The spelling of 77276997242 in words is "seventy-seven billion, two hundred seventy-six million, nine hundred ninety-seven thousand, two hundred forty-two".