77927211472 has 160 divisors (see below), whose sum is σ = 179808491520. Its totient is φ = 32317347840.

The previous prime is 77927211451. The next prime is 77927211491. The reversal of 77927211472 is 27411272977.

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, 15044179 + ... + 15049357.

It is an arithmetic number, because the mean of its divisors is an integer number (1123803072).

Almost surely, 2^77927211472 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 77927211472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89904245760).

77927211472 is an abundant number, since it is smaller than the sum of its proper divisors (101881280048).

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

77927211472 is a wasteful number, since it uses less digits than its factorization.

77927211472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369 (or 5363 counting only the distinct ones).

The product of its digits is 691488, while the sum is 49.

The spelling of 77927211472 in words is "seventy-seven billion, nine hundred twenty-seven million, two hundred eleven thousand, four hundred seventy-two".