28178408522496 has 72 divisors (see below), whose sum is σ = 75287472616944. Its totient is φ = 9356254904320.

The previous prime is 28178408522479. The next prime is 28178408522557. The reversal of 28178408522496 is 69422580487182.

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, 71185185 + ... + 71579936.

It is an arithmetic number, because the mean of its divisors is an integer number (1045659341902).

Almost surely, 2^{28178408522496} is an apocalyptic number.

It is an amenable number.

28178408522496 is an abundant number, since it is smaller than the sum of its proper divisors (47109064094448).

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

28178408522496 is a wasteful number, since it uses less digits than its factorization.

28178408522496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142765397 (or 142765383 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 66.

The spelling of 28178408522496 in words is "twenty-eight trillion, one hundred seventy-eight billion, four hundred eight million, five hundred twenty-two thousand, four hundred ninety-six".