20356623135852 has 96 divisors (see below), whose sum is σ = 52548813338112. Its totient is φ = 6100651662336.

The previous prime is 20356623135851. The next prime is 20356623135853. The reversal of 20356623135852 is 25853132665302.

It is an interprime number because it is at equal distance from previous prime (20356623135851) and next prime (20356623135853).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 20356623135795 and 20356623135804.

It is not an unprimeable number, because it can be changed into a prime (20356623135851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686203 + ... + 6417485.

It is an arithmetic number, because the mean of its divisors is an integer number (547383472272).

Almost surely, 2^{20356623135852} 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 20356623135852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26274406669056).

20356623135852 is an abundant number, since it is smaller than the sum of its proper divisors (32192190202260).

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

20356623135852 is a wasteful number, since it uses less digits than its factorization.

20356623135852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732087 (or 5732085 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 20356623135852 in words is "twenty trillion, three hundred fifty-six billion, six hundred twenty-three million, one hundred thirty-five thousand, eight hundred fifty-two".