77432381960 has 32 divisors (see below), whose sum is σ = 178931588760. Its totient is φ = 30135845376.

The previous prime is 77432381911. The next prime is 77432381987. The reversal of 77432381960 is 6918323477.

It can be written as a sum of positive squares in 4 ways, for example, as 71977377796 + 5455004164 = 268286^2 + 73858^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77432381899 and 77432381908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26158109 + ... + 26161068.

Almost surely, 2^77432381960 is an apocalyptic number.

It is an amenable number.

77432381960 is an abundant number, since it is smaller than the sum of its proper divisors (101499206800).

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

77432381960 is a wasteful number, since it uses less digits than its factorization.

77432381960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52319225 (or 52319221 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 77432381960 in words is "seventy-seven billion, four hundred thirty-two million, three hundred eighty-one thousand, nine hundred sixty".