77116720047 has 32 divisors (see below), whose sum is σ = 107909383680. Its totient is φ = 48921882240.

The previous prime is 77116720039. The next prime is 77116720063. The reversal of 77116720047 is 74002761177.

It is not a de Polignac number, because 77116720047 - 2³ = 77116720039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77116719990 and 77116720008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77116720547) 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, 3027358 + ... + 3052724.

It is an arithmetic number, because the mean of its divisors is an integer number (3372168240).

Almost surely, 2^77116720047 is an apocalyptic number.

77116720047 is a deficient number, since it is larger than the sum of its proper divisors (30792663633).

77116720047 is a wasteful number, since it uses less digits than its factorization.

77116720047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25903.

The product of its (nonzero) digits is 115248, while the sum is 42.

The spelling of 77116720047 in words is "seventy-seven billion, one hundred sixteen million, seven hundred twenty thousand, forty-seven".