9091968050621 has 24 divisors (see below), whose sum is σ = 9460168177320. Its totient is φ = 8736811776000.

The previous prime is 9091968050603. The next prime is 9091968050677. The reversal of 9091968050621 is 1260508691909.

It can be written as a sum of positive squares in 12 ways, for example, as 1544937132025 + 7547030918596 = 1242955^2 + 2747186^2 .

It is not a de Polignac number, because 9091968050621 - 2²⁶ = 9091900941757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091968050821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107299571 + ... + 107384271.

It is an arithmetic number, because the mean of its divisors is an integer number (394173674055).

Almost surely, 2^{9091968050621} is an apocalyptic number.

It is an amenable number.

9091968050621 is a deficient number, since it is larger than the sum of its proper divisors (368200126699).

9091968050621 is an equidigital number, since it uses as much as digits as its factorization.

9091968050621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85745 (or 85708 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 56.

The spelling of 9091968050621 in words is "nine trillion, ninety-one billion, nine hundred sixty-eight million, fifty thousand, six hundred twenty-one".