20146869652 has 48 divisors (see below), whose sum is σ = 43522286080. Its totient is φ = 7946491392.

The previous prime is 20146869637. The next prime is 20146869671. The reversal of 20146869652 is 25696864102.

It is a super-2 number, since 2×20146869652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20146869596 and 20146869605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40549 + ... + 204787.

Almost surely, 2^20146869652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20146869652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21761143040).

20146869652 is an abundant number, since it is smaller than the sum of its proper divisors (23375416428).

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

20146869652 is a wasteful number, since it uses less digits than its factorization.

20146869652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164600 (or 164598 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 20146869652 in words is "twenty billion, one hundred forty-six million, eight hundred sixty-nine thousand, six hundred fifty-two".