77583286878748 has 96 divisors (see below), whose sum is σ = 160544355471360. Its totient is φ = 32102644654080.

The previous prime is 77583286878697. The next prime is 77583286878833. The reversal of 77583286878748 is 84787868238577.

It is a super-2 number, since 2×77583286878748² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 982313436 + ... + 982392412.

It is an arithmetic number, because the mean of its divisors is an integer number (1672337036160).

Almost surely, 2^{77583286878748} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77583286878748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80272177735680).

77583286878748 is an abundant number, since it is smaller than the sum of its proper divisors (82961068592612).

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

77583286878748 is a wasteful number, since it uses less digits than its factorization.

77583286878748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81635 (or 81633 counting only the distinct ones).

The product of its digits is 56646696960, while the sum is 88.

The spelling of 77583286878748 in words is "seventy-seven trillion, five hundred eighty-three billion, two hundred eighty-six million, eight hundred seventy-eight thousand, seven hundred forty-eight".