20435743356 has 192 divisors, whose sum is σ = 56965708800. Its totient is φ = 5580804096.

The previous prime is 20435743331. The next prime is 20435743381. The reversal of 20435743356 is 65334753402.

It is an interprime number because it is at equal distance from previous prime (20435743331) and next prime (20435743381).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60640020 + ... + 60640356.

It is an arithmetic number, because the mean of its divisors is an integer number (296696400).

Almost surely, 2^20435743356 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 20435743356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28482854400).

20435743356 is an abundant number, since it is smaller than the sum of its proper divisors (36529965444).

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

20435743356 is a wasteful number, since it uses less digits than its factorization.

20435743356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 42.

The spelling of 20435743356 in words is "twenty billion, four hundred thirty-five million, seven hundred forty-three thousand, three hundred fifty-six".