20831732030400 has 168 divisors, whose sum is σ = 68453763690624. Its totient is φ = 5546324044800.

The previous prime is 20831732030383. The next prime is 20831732030419. The reversal of 20831732030400 is 403023713802.

It is a super-2 number, since 2×20831732030400² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 410142 + ... + 6467741.

Almost surely, 2^{20831732030400} is an apocalyptic number.

20831732030400 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 20831732030400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34226881845312).

20831732030400 is an abundant number, since it is smaller than the sum of its proper divisors (47622031660224).

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

20831732030400 is a wasteful number, since it uses less digits than its factorization.

20831732030400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6878539 (or 6878524 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 20831732030400 in words is "twenty trillion, eight hundred thirty-one billion, seven hundred thirty-two million, thirty thousand, four hundred".