77802741433056 has 192 divisors, whose sum is σ = 219012738900480. Its totient is φ = 24135510067200.

The previous prime is 77802741433037. The next prime is 77802741433069. The reversal of 77802741433056 is 65033414720877.

It is a junction number, because it is equal to n+sod(n) for n = 77802741432987 and 77802741433005.

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, 7492381 + ... + 14551331.

It is an arithmetic number, because the mean of its divisors is an integer number (1140691348440).

Almost surely, 2^{77802741433056} 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 77802741433056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109506369450240).

77802741433056 is an abundant number, since it is smaller than the sum of its proper divisors (141209997467424).

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

77802741433056 is a wasteful number, since it uses less digits than its factorization.

77802741433056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059137 (or 7059129 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 57.

The spelling of 77802741433056 in words is "seventy-seven trillion, eight hundred two billion, seven hundred forty-one million, four hundred thirty-three thousand, fifty-six".