20146564626 has 16 divisors (see below), whose sum is σ = 40294680384. Its totient is φ = 6715263024.

The previous prime is 20146564621. The next prime is 20146564661. The reversal of 20146564626 is 62646564102.

It is not an unprimeable number, because it can be changed into a prime (20146564621) 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, 169416 + ... + 262668.

It is an arithmetic number, because the mean of its divisors is an integer number (2518417524).

Almost surely, 2^20146564626 is an apocalyptic number.

20146564626 is an abundant number, since it is smaller than the sum of its proper divisors (20148115758).

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

20146564626 is a wasteful number, since it uses less digits than its factorization.

20146564626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129265.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 20146564626 in words is "twenty billion, one hundred forty-six million, five hundred sixty-four thousand, six hundred twenty-six".