69401221922 has 18 divisors (see below), whose sum is σ = 105127171443. Its totient is φ = 34362138384.

The previous prime is 69401221909. The next prime is 69401221933. The reversal of 69401221922 is 22912210496.

It can be written as a sum of positive squares in 5 ways, for example, as 25482056161 + 43919165761 = 159631^2 + 209569^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=186281.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40608404 + ... + 40610112.

Almost surely, 2^69401221922 is an apocalyptic number.

69401221922 is a deficient number, since it is larger than the sum of its proper divisors (35725949521).

69401221922 is an frugal number, since it uses more digits than its factorization.

69401221922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638 (or 1820 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 69401221922 in words is "sixty-nine billion, four hundred one million, two hundred twenty-one thousand, nine hundred twenty-two".