77799342240 has 96 divisors (see below), whose sum is σ = 272297712960. Its totient is φ = 20746490112.

The previous prime is 77799342223. The next prime is 77799342319. The reversal of 77799342240 is 4224399777.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9000234 + ... + 9008873.

It is an arithmetic number, because the mean of its divisors is an integer number (2836434510).

Almost surely, 2^77799342240 is an apocalyptic number.

It is an amenable number.

77799342240 is an abundant number, since it is smaller than the sum of its proper divisors (194498370720).

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

77799342240 is a wasteful number, since it uses less digits than its factorization.

77799342240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18009131 (or 18009117 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 77799342240 in words is "seventy-seven billion, seven hundred ninety-nine million, three hundred forty-two thousand, two hundred forty".