20136436706430 has 160 divisors (see below), whose sum is σ = 59090211227520. Its totient is φ = 4879632300480.

The previous prime is 20136436706429. The next prime is 20136436706479. The reversal of 20136436706430 is 3460763463102.

20136436706430 is a `hidden beast` number, since 20 + 136 + 4 + 3 + 67 + 0 + 6 + 430 = 666.

It is a super-2 number, since 2×20136436706430² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 22177437 + ... + 23067543.

It is an arithmetic number, because the mean of its divisors is an integer number (369313820172).

Almost surely, 2^{20136436706430} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20136436706430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29545105613760).

20136436706430 is an abundant number, since it is smaller than the sum of its proper divisors (38953774521090).

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

20136436706430 is a wasteful number, since it uses less digits than its factorization.

20136436706430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892676 (or 892667 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 20136436706430 in words is "twenty trillion, one hundred thirty-six billion, four hundred thirty-six million, seven hundred six thousand, four hundred thirty".