77734634606445 has 64 divisors (see below), whose sum is σ = 132667798233600. Its totient is φ = 38731430707200.

The previous prime is 77734634606441. The next prime is 77734634606449. The reversal of 77734634606445 is 54460643643777.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77734634606441) and next prime (77734634606449).

It is not a de Polignac number, because 77734634606445 - 2² = 77734634606441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77734634606441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19544325 + ... + 23182965.

It is an arithmetic number, because the mean of its divisors is an integer number (2072934347400).

Almost surely, 2^{77734634606445} is an apocalyptic number.

It is an amenable number.

77734634606445 is a deficient number, since it is larger than the sum of its proper divisors (54933163627155).

77734634606445 is a wasteful number, since it uses less digits than its factorization.

77734634606445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639286.

The product of its (nonzero) digits is 853493760, while the sum is 66.

The spelling of 77734634606445 in words is "seventy-seven trillion, seven hundred thirty-four billion, six hundred thirty-four million, six hundred six thousand, four hundred forty-five".