78535481472880 has 20 divisors (see below), whose sum is σ = 182594994424632. Its totient is φ = 31414192589120.

The previous prime is 78535481472869. The next prime is 78535481472923. The reversal of 78535481472880 is 8827418453587.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490846759126 + ... + 490846759285.

Almost surely, 2^{78535481472880} is an apocalyptic number.

It is an amenable number.

78535481472880 is an abundant number, since it is smaller than the sum of its proper divisors (104059512951752).

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

78535481472880 is a wasteful number, since it uses less digits than its factorization.

78535481472880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981693518424 (or 981693518418 counting only the distinct ones).

The product of its (nonzero) digits is 481689600, while the sum is 70.

The spelling of 78535481472880 in words is "seventy-eight trillion, five hundred thirty-five billion, four hundred eighty-one million, four hundred seventy-two thousand, eight hundred eighty".