77877337505 has 16 divisors (see below), whose sum is σ = 102274251264. Its totient is φ = 56457098880.

The previous prime is 77877337471. The next prime is 77877337561. The reversal of 77877337505 is 50573377877.

It is not a de Polignac number, because 77877337505 - 2⁸ = 77877337249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2244689 + ... + 2279118.

It is an arithmetic number, because the mean of its divisors is an integer number (6392140704).

Almost surely, 2^77877337505 is an apocalyptic number.

It is an amenable number.

77877337505 is a deficient number, since it is larger than the sum of its proper divisors (24396913759).

77877337505 is a wasteful number, since it uses less digits than its factorization.

77877337505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524136.

The product of its (nonzero) digits is 30252600, while the sum is 59.

The spelling of 77877337505 in words is "seventy-seven billion, eight hundred seventy-seven million, three hundred thirty-seven thousand, five hundred five".