84487777778448 has 120 divisors (see below), whose sum is σ = 258196884922080. Its totient is φ = 25577231431680.

The previous prime is 84487777778441. The next prime is 84487777778461.

84487777778448 is a `hidden beast` number, since 8 + 4 + 487 + 7 + 7 + 7 + 7 + 7 + 84 + 48 = 666.

84487777778448 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (84487777778441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24557761 + ... + 27785952.

It is an arithmetic number, because the mean of its divisors is an integer number (2151640707684).

Almost surely, 2^{84487777778448} is an apocalyptic number.

84487777778448 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

84487777778448 is an abundant number, since it is smaller than the sum of its proper divisors (173709107143632).

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

84487777778448 is a wasteful number, since it uses less digits than its factorization.

84487777778448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52344757 (or 52344748 counting only the distinct ones).

The product of its digits is 123363917824, while the sum is 90.

The spelling of 84487777778448 in words is "eighty-four trillion, four hundred eighty-seven billion, seven hundred seventy-seven million, seven hundred seventy-eight thousand, four hundred forty-eight".