1779421996922 has 8 divisors (see below), whose sum is σ = 2669265446772. Its totient is φ = 889666848000.

The previous prime is 1779421996903. The next prime is 1779421996927. The reversal of 1779421996922 is 2296991249771.

It can be written as a sum of positive squares in 2 ways, for example, as 1775505615361 + 3916381561 = 1332481^2 + 62581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1779421996927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22024829 + ... + 22105472.

Almost surely, 2^{1779421996922} is an apocalyptic number.

1779421996922 is a deficient number, since it is larger than the sum of its proper divisors (889843449850).

1779421996922 is a wasteful number, since it uses less digits than its factorization.

1779421996922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44150464.

The product of its digits is 61725888, while the sum is 68.

The spelling of 1779421996922 in words is "one trillion, seven hundred seventy-nine billion, four hundred twenty-one million, nine hundred ninety-six thousand, nine hundred twenty-two".