20756775365400 has 192 divisors, whose sum is σ = 68197051850400. Its totient is φ = 5204497858560.

The previous prime is 20756775365399. The next prime is 20756775365407. The reversal of 20756775365400 is 456357765702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20756775365407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9551616 + ... + 11521584.

Almost surely, 2^{20756775365400} is an apocalyptic number.

20756775365400 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 20756775365400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34098525925200).

20756775365400 is an abundant number, since it is smaller than the sum of its proper divisors (47440276485000).

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

20756775365400 is a wasteful number, since it uses less digits than its factorization.

20756775365400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971038 (or 1971029 counting only the distinct ones).

The product of its (nonzero) digits is 37044000, while the sum is 57.

The spelling of 20756775365400 in words is "twenty trillion, seven hundred fifty-six billion, seven hundred seventy-five million, three hundred sixty-five thousand, four hundred".