20540055210100 has 144 divisors (see below), whose sum is σ = 48342372640128. Its totient is φ = 7554275688960.

The previous prime is 20540055210079. The next prime is 20540055210121. The reversal of 20540055210100 is 101255004502.

It is an interprime number because it is at equal distance from previous prime (20540055210079) and next prime (20540055210121).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5609302 + ... + 8517298.

It is an arithmetic number, because the mean of its divisors is an integer number (335710921112).

Almost surely, 2^{20540055210100} is an apocalyptic number.

20540055210100 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 20540055210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24171186320064).

20540055210100 is an abundant number, since it is smaller than the sum of its proper divisors (27802317430028).

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

20540055210100 is a wasteful number, since it uses less digits than its factorization.

20540055210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908154 (or 2908147 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 20540055210100 in words is "twenty trillion, five hundred forty billion, fifty-five million, two hundred ten thousand, one hundred".