20863668425040 has 960 divisors, whose sum is σ = 85939624083456. Its totient is φ = 4432591392768.

The previous prime is 20863668424999. The next prime is 20863668425053. The reversal of 20863668425040 is 4052486636802.

It is a happy number.

20863668425040 is a `hidden beast` number, since 2 + 0 + 8 + 6 + 36 + 68 + 42 + 504 + 0 = 666.

It is a super-2 number, since 2×20863668425040² (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 191 ways as a sum of consecutive naturals, for example, 981947697 + ... + 981968943.

Almost surely, 2^{20863668425040} is an apocalyptic number.

20863668425040 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 20863668425040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42969812041728).

20863668425040 is an abundant number, since it is smaller than the sum of its proper divisors (65075955658416).

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

20863668425040 is a wasteful number, since it uses less digits than its factorization.

20863668425040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21536 (or 21527 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 20863668425040 in words is "twenty trillion, eight hundred sixty-three billion, six hundred sixty-eight million, four hundred twenty-five thousand, forty".