77913544960 has 144 divisors (see below), whose sum is σ = 194176991232. Its totient is φ = 29920665600.

The previous prime is 77913544957. The next prime is 77913544963. The reversal of 77913544960 is 6944531977.

It is an interprime number because it is at equal distance from previous prime (77913544957) and next prime (77913544963).

It is not an unprimeable number, because it can be changed into a prime (77913544963) 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, 5031630 + ... + 5047090.

It is an arithmetic number, because the mean of its divisors is an integer number (1348451328).

Almost surely, 2^77913544960 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 77913544960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97088495616).

77913544960 is an abundant number, since it is smaller than the sum of its proper divisors (116263446272).

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

77913544960 is a wasteful number, since it uses less digits than its factorization.

77913544960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15640 (or 15626 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 77913544960 in words is "seventy-seven billion, nine hundred thirteen million, five hundred forty-four thousand, nine hundred sixty".