20146679722 has 16 divisors (see below), whose sum is σ = 32990456520. Its totient is φ = 9171090432.

The previous prime is 20146679699. The next prime is 20146679741. The reversal of 20146679722 is 22797664102.

It is a happy number.

It is a Cunningham number, because it is equal to 141939²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 11436377481 + 8710302241 = 106941^2 + 93329^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5305447 + ... + 5309242.

Almost surely, 2^20146679722 is an apocalyptic number.

20146679722 is a deficient number, since it is larger than the sum of its proper divisors (12843776798).

20146679722 is a wasteful number, since it uses less digits than its factorization.

20146679722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10614777.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 20146679722 in words is "twenty billion, one hundred forty-six million, six hundred seventy-nine thousand, seven hundred twenty-two".