77884802745 has 32 divisors (see below), whose sum is σ = 134109095040. Its totient is φ = 38454205440.

The previous prime is 77884802693. The next prime is 77884802747. The reversal of 77884802745 is 54720848877.

It is not a de Polignac number, because 77884802745 - 2¹⁷ = 77884671673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77884802747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2487975 + ... + 2519084.

It is an arithmetic number, because the mean of its divisors is an integer number (4190909220).

Almost surely, 2^77884802745 is an apocalyptic number.

It is an amenable number.

77884802745 is a deficient number, since it is larger than the sum of its proper divisors (56224292295).

77884802745 is a wasteful number, since it uses less digits than its factorization.

77884802745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007145.

The product of its (nonzero) digits is 28098560, while the sum is 60.

The spelling of 77884802745 in words is "seventy-seven billion, eight hundred eighty-four million, eight hundred two thousand, seven hundred forty-five".