77712708126 has 32 divisors (see below), whose sum is σ = 159466538880. Its totient is φ = 25233947424.

The previous prime is 77712708121. The next prime is 77712708149. The reversal of 77712708126 is 62180721777.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77712708121) 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, 307536 + ... + 500003.

It is an arithmetic number, because the mean of its divisors is an integer number (4983329340).

Almost surely, 2^77712708126 is an apocalyptic number.

77712708126 is an abundant number, since it is smaller than the sum of its proper divisors (81753830754).

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

77712708126 is a wasteful number, since it uses less digits than its factorization.

77712708126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807960.

The product of its (nonzero) digits is 460992, while the sum is 48.

The spelling of 77712708126 in words is "seventy-seven billion, seven hundred twelve million, seven hundred eight thousand, one hundred twenty-six".