9051649891216 has 15 divisors (see below), whose sum is σ = 17537594980881. Its totient is φ = 4525818928416.

The previous prime is 9051649891157. The next prime is 9051649891289. The reversal of 9051649891216 is 6121989461509.

The square root of 9051649891216 is 3008596.

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

It can be written as a sum of positive squares in only one way, i.e., 3547933891216 + 5503716000000 = 1883596^2 + 2346000^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11658310 + ... + 12410458.

Almost surely, 2^{9051649891216} is an apocalyptic number.

9051649891216 is the 3008596-th square number.

It is an amenable number.

9051649891216 is a deficient number, since it is larger than the sum of its proper divisors (8485945089665).

9051649891216 is an frugal number, since it uses more digits than its factorization.

9051649891216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504306 (or 752151 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 61.

The spelling of 9051649891216 in words is "nine trillion, fifty-one billion, six hundred forty-nine million, eight hundred ninety-one thousand, two hundred sixteen".