90278141193361 has 9 divisors (see below), whose sum is σ = 99231460160329. Its totient is φ = 82070942433700.

The previous prime is 90278141193347. The next prime is 90278141193377. The reversal of 90278141193361 is 16339114187209.

The square root of 90278141193361 is 9501481.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 90278141193361 - 2²¹ = 90278139096209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90278141193301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 104084406 + ... + 104948176.

Almost surely, 2^{90278141193361} is an apocalyptic number.

90278141193361 is the 9501481-st square number.

90278141193361 is the 4750741-st centered octagonal number.

It is an amenable number.

90278141193361 is a deficient number, since it is larger than the sum of its proper divisors (8953318966968).

90278141193361 is an frugal number, since it uses more digits than its factorization.

90278141193361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727564 (or 863782 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 90278141193361 in words is "ninety trillion, two hundred seventy-eight billion, one hundred forty-one million, one hundred ninety-three thousand, three hundred sixty-one".