77829107867892 has 36 divisors (see below), whose sum is σ = 197248356963840. Its totient is φ = 25875299565072.

The previous prime is 77829107867873. The next prime is 77829107867899. The reversal of 77829107867892 is 29876870192877.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77829107867899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2822335642 + ... + 2822363217.

Almost surely, 2^{77829107867892} is an apocalyptic number.

It is an amenable number.

77829107867892 is an abundant number, since it is smaller than the sum of its proper divisors (119419249095948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77829107867892 is a wasteful number, since it uses less digits than its factorization.

77829107867892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5644699252 (or 5644699247 counting only the distinct ones).

The product of its (nonzero) digits is 2389782528, while the sum is 81.

The spelling of 77829107867892 in words is "seventy-seven trillion, eight hundred twenty-nine billion, one hundred seven million, eight hundred sixty-seven thousand, eight hundred ninety-two".