77750284881345 has 16 divisors (see below), whose sum is σ = 124958305393152. Its totient is φ = 41280868742400.

The previous prime is 77750284881343. The next prime is 77750284881359. The reversal of 77750284881345 is 54318848205777.

It is not a de Polignac number, because 77750284881345 - 2¹ = 77750284881343 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77750284881345.

It is not an unprimeable number, because it can be changed into a prime (77750284881341) 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, 11621862856 + ... + 11621869545.

It is an arithmetic number, because the mean of its divisors is an integer number (7809894087072).

Almost surely, 2^{77750284881345} is an apocalyptic number.

It is an amenable number.

77750284881345 is a deficient number, since it is larger than the sum of its proper divisors (47208020511807).

77750284881345 is a wasteful number, since it uses less digits than its factorization.

77750284881345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23243732632.

The product of its (nonzero) digits is 421478400, while the sum is 69.

The spelling of 77750284881345 in words is "seventy-seven trillion, seven hundred fifty billion, two hundred eighty-four million, eight hundred eighty-one thousand, three hundred forty-five".