77404440732 has 96 divisors (see below), whose sum is σ = 193056804864. Its totient is φ = 24053452800.

The previous prime is 77404440731. The next prime is 77404440779. The reversal of 77404440732 is 23704440477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77404440731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9386203 + ... + 9394445.

It is an arithmetic number, because the mean of its divisors is an integer number (2011008384).

Almost surely, 2^77404440732 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 77404440732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96528402432).

77404440732 is an abundant number, since it is smaller than the sum of its proper divisors (115652364132).

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

77404440732 is a wasteful number, since it uses less digits than its factorization.

77404440732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699 (or 8697 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 42.

The spelling of 77404440732 in words is "seventy-seven billion, four hundred four million, four hundred forty thousand, seven hundred thirty-two".