20073072751564 has 96 divisors (see below), whose sum is σ = 41791269703680. Its totient is φ = 8256972556800.

The previous prime is 20073072751553. The next prime is 20073072751591. The reversal of 20073072751564 is 46515727037002.

It is a super-2 number, since 2×20073072751564² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39487369 + ... + 39992479.

It is an arithmetic number, because the mean of its divisors is an integer number (435325726080).

Almost surely, 2^{20073072751564} 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 20073072751564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20895634851840).

20073072751564 is an abundant number, since it is smaller than the sum of its proper divisors (21718196952116).

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

20073072751564 is a wasteful number, since it uses less digits than its factorization.

20073072751564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505679 (or 505677 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 49.

Adding to 20073072751564 its reverse (46515727037002), we get a palindrome (66588799788566).

The spelling of 20073072751564 in words is "twenty trillion, seventy-three billion, seventy-two million, seven hundred fifty-one thousand, five hundred sixty-four".