77050641217 has 32 divisors (see below), whose sum is σ = 88399973376. Its totient is φ = 66475041600.

The previous prime is 77050641193. The next prime is 77050641221. The reversal of 77050641217 is 71214605077.

It is a happy number.

It is not a de Polignac number, because 77050641217 - 2¹⁹ = 77050116929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77050641217.

It is not an unprimeable number, because it can be changed into a prime (77050641277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24990558 + ... + 24993640.

It is an arithmetic number, because the mean of its divisors is an integer number (2762499168).

Almost surely, 2^77050641217 is an apocalyptic number.

It is an amenable number.

77050641217 is a deficient number, since it is larger than the sum of its proper divisors (11349332159).

77050641217 is a wasteful number, since it uses less digits than its factorization.

77050641217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 77050641217 in words is "seventy-seven billion, fifty million, six hundred forty-one thousand, two hundred seventeen".