20197508622 has 16 divisors (see below), whose sum is σ = 41254486272. Its totient is φ = 6589258040.

The previous prime is 20197508621. The next prime is 20197508659. The reversal of 20197508622 is 22680579102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20197508621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35810904 + ... + 35811467.

It is an arithmetic number, because the mean of its divisors is an integer number (2578405392).

Almost surely, 2^20197508622 is an apocalyptic number.

20197508622 is an abundant number, since it is smaller than the sum of its proper divisors (21056977650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20197508622 is a wasteful number, since it uses less digits than its factorization.

20197508622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71622423.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 20197508622 in words is "twenty billion, one hundred ninety-seven million, five hundred eight thousand, six hundred twenty-two".