77772110347 has 16 divisors (see below), whose sum is σ = 80886446080. Its totient is φ = 74724249600.

The previous prime is 77772110341. The next prime is 77772110359. The reversal of 77772110347 is 74301127777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77772110347 is a prime.

It is a super-2 number, since 2×77772110347² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77772110297 and 77772110306.

It is not an unprimeable number, because it can be changed into a prime (77772110341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878347 + ... + 962827.

It is an arithmetic number, because the mean of its divisors is an integer number (5055402880).

Almost surely, 2^77772110347 is an apocalyptic number.

77772110347 is a deficient number, since it is larger than the sum of its proper divisors (3114335733).

77772110347 is a wasteful number, since it uses less digits than its factorization.

77772110347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84874.

The product of its (nonzero) digits is 403368, while the sum is 46.

The spelling of 77772110347 in words is "seventy-seven billion, seven hundred seventy-two million, one hundred ten thousand, three hundred forty-seven".