20606691522 has 48 divisors (see below), whose sum is σ = 42010990560. Its totient is φ = 6738438144.

The previous prime is 20606691517. The next prime is 20606691527. The reversal of 20606691522 is 22519660602.

It is an interprime number because it is at equal distance from previous prime (20606691517) and next prime (20606691527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606691527) 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, 16060693 + ... + 16061975.

It is an arithmetic number, because the mean of its divisors is an integer number (875228970).

Almost surely, 2^20606691522 is an apocalyptic number.

20606691522 is an abundant number, since it is smaller than the sum of its proper divisors (21404299038).

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

20606691522 is a wasteful number, since it uses less digits than its factorization.

20606691522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2116 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 20606691522 in words is "twenty billion, six hundred six million, six hundred ninety-one thousand, five hundred twenty-two".