20877950096640 has 1728 divisors, whose sum is σ = 92628563489280. Its totient is φ = 4224225116160.

The previous prime is 20877950096579. The next prime is 20877950096677. The reversal of 20877950096640 is 4669005977802.

20877950096640 is a `hidden beast` number, since 2 + 0 + 87 + 7 + 9 + 500 + 9 + 6 + 6 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 2535881964 + ... + 2535890196.

It is an arithmetic number, because the mean of its divisors is an integer number (53604492760).

Almost surely, 2^{20877950096640} is an apocalyptic number.

20877950096640 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 20877950096640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46314281744640).

20877950096640 is an abundant number, since it is smaller than the sum of its proper divisors (71750613392640).

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

20877950096640 is a wasteful number, since it uses less digits than its factorization.

20877950096640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380 (or 8363 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 20877950096640 in words is "twenty trillion, eight hundred seventy-seven billion, nine hundred fifty million, ninety-six thousand, six hundred forty".