77734867354705 has 16 divisors (see below), whose sum is σ = 104244008375808. Its totient is φ = 55155559984000.

The previous prime is 77734867354693. The next prime is 77734867354709. The reversal of 77734867354705 is 50745376843777.

It is a de Polignac number, because none of the positive numbers 2^k-77734867354705 is a prime.

It is a super-2 number, since 2×77734867354705² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77734867354709) 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, 17236110241 + ... + 17236114750.

It is an arithmetic number, because the mean of its divisors is an integer number (6515250523488).

Almost surely, 2^{77734867354705} is an apocalyptic number.

It is an amenable number.

77734867354705 is a deficient number, since it is larger than the sum of its proper divisors (26509141021103).

77734867354705 is a wasteful number, since it uses less digits than its factorization.

77734867354705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34472225048.

The product of its (nonzero) digits is 2904249600, while the sum is 73.

The spelling of 77734867354705 in words is "seventy-seven trillion, seven hundred thirty-four billion, eight hundred sixty-seven million, three hundred fifty-four thousand, seven hundred five".