77050616505 has 8 divisors (see below), whose sum is σ = 123280986432. Its totient is φ = 41093662128.

The previous prime is 77050616497. The next prime is 77050616509. The reversal of 77050616505 is 50561605077.

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

It is not a de Polignac number, because 77050616505 - 2³ = 77050616497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77050616509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2568353869 + ... + 2568353898.

It is an arithmetic number, because the mean of its divisors is an integer number (15410123304).

Almost surely, 2^77050616505 is an apocalyptic number.

It is an amenable number.

77050616505 is a deficient number, since it is larger than the sum of its proper divisors (46230369927).

77050616505 is a wasteful number, since it uses less digits than its factorization.

77050616505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136707775.

The product of its (nonzero) digits is 220500, while the sum is 42.

The spelling of 77050616505 in words is "seventy-seven billion, fifty million, six hundred sixteen thousand, five hundred five".