9221947738755 has 128 divisors (see below), whose sum is σ = 15161170277376. Its totient is φ = 4785650688000.

The previous prime is 9221947738741. The next prime is 9221947738769. The reversal of 9221947738755 is 5578377491229.

It is a Cunningham number, because it is equal to 3036766²-1.

It is an interprime number because it is at equal distance from previous prime (9221947738741) and next prime (9221947738769).

It is not a de Polignac number, because 9221947738755 - 2⁴ = 9221947738739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9221947738755.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20179316487 + ... + 20179316943.

It is an arithmetic number, because the mean of its divisors is an integer number (118446642792).

Almost surely, 2^{9221947738755} is an apocalyptic number.

9221947738755 is a deficient number, since it is larger than the sum of its proper divisors (5939222538621).

9221947738755 is a wasteful number, since it uses less digits than its factorization.

9221947738755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397.

The product of its digits is 266716800, while the sum is 69.

The spelling of 9221947738755 in words is "nine trillion, two hundred twenty-one billion, nine hundred forty-seven million, seven hundred thirty-eight thousand, seven hundred fifty-five".