20390523436000 has 384 divisors, whose sum is σ = 55049997824640. Its totient is φ = 7394789376000.

The previous prime is 20390523435983. The next prime is 20390523436009. The reversal of 20390523436000 is 63432509302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20390523436009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 171472564 + ... + 171591436.

It is an arithmetic number, because the mean of its divisors is an integer number (143359369335).

Almost surely, 2^{20390523436000} is an apocalyptic number.

20390523436000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20390523436000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27524998912320).

20390523436000 is an abundant number, since it is smaller than the sum of its proper divisors (34659474388640).

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

20390523436000 is a wasteful number, since it uses less digits than its factorization.

20390523436000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119015 (or 118997 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 37.

The spelling of 20390523436000 in words is "twenty trillion, three hundred ninety billion, five hundred twenty-three million, four hundred thirty-six thousand".