20367561450 has 192 divisors, whose sum is σ = 56733011712. Its totient is φ = 4808601600.

The previous prime is 20367561449. The next prime is 20367561451. The reversal of 20367561450 is 5416576302.

It is an interprime number because it is at equal distance from previous prime (20367561449) and next prime (20367561451).

It is a super-2 number, since 2×20367561450² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20367561399 and 20367561408.

It is not an unprimeable number, because it can be changed into a prime (20367561451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3574804 + ... + 3580496.

It is an arithmetic number, because the mean of its divisors is an integer number (295484436).

Almost surely, 2^20367561450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20367561450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28366505856).

20367561450 is an abundant number, since it is smaller than the sum of its proper divisors (36365450262).

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

20367561450 is a wasteful number, since it uses less digits than its factorization.

20367561450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5809 (or 5804 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 20367561450 in words is "twenty billion, three hundred sixty-seven million, five hundred sixty-one thousand, four hundred fifty".