99219087678 has 16 divisors (see below), whose sum is σ = 198444085776. Its totient is φ = 33072044160.

The previous prime is 99219087647. The next prime is 99219087707. The reversal of 99219087678 is 87678091299.

99219087678 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10701 + ... + 445592.

It is an arithmetic number, because the mean of its divisors is an integer number (12402755361).

Almost surely, 2^99219087678 is an apocalyptic number.

99219087678 is an abundant number, since it is smaller than the sum of its proper divisors (99224998098).

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

99219087678 is a wasteful number, since it uses less digits than its factorization.

99219087678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492539.

The product of its (nonzero) digits is 27433728, while the sum is 66.

The spelling of 99219087678 in words is "ninety-nine billion, two hundred nineteen million, eighty-seven thousand, six hundred seventy-eight".