89485781278 has 8 divisors (see below), whose sum is σ = 141293338920. Its totient is φ = 42388001640.

The previous prime is 89485781239. The next prime is 89485781299. The reversal of 89485781278 is 87218758498.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177444453 + ... + 1177444528.

It is an arithmetic number, because the mean of its divisors is an integer number (17661667365).

Almost surely, 2^89485781278 is an apocalyptic number.

89485781278 is a deficient number, since it is larger than the sum of its proper divisors (51807557642).

89485781278 is a wasteful number, since it uses less digits than its factorization.

89485781278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354889002.

The product of its digits is 72253440, while the sum is 67.

The spelling of 89485781278 in words is "eighty-nine billion, four hundred eighty-five million, seven hundred eighty-one thousand, two hundred seventy-eight".