84578957802 has 24 divisors (see below), whose sum is σ = 183394669536. Its totient is φ = 28171407336.

The previous prime is 84578957789. The next prime is 84578957803. The reversal of 84578957802 is 20875987548.

84578957802 is a `hidden beast` number, since 8 + 4 + 57 + 8 + 9 + 578 + 0 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 84578957802.

It is not an unprimeable number, because it can be changed into a prime (84578957803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1774038 + ... + 1821089.

It is an arithmetic number, because the mean of its divisors is an integer number (7641444564).

Almost surely, 2^84578957802 is an apocalyptic number.

84578957802 is an abundant number, since it is smaller than the sum of its proper divisors (98815711734).

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

84578957802 is a wasteful number, since it uses less digits than its factorization.

84578957802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596442 (or 3596439 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 84578957802 in words is "eighty-four billion, five hundred seventy-eight million, nine hundred fifty-seven thousand, eight hundred two".