20003561626410 has 128 divisors (see below), whose sum is σ = 53547988032000. Its totient is φ = 5313806184960.

The previous prime is 20003561626361. The next prime is 20003561626429. The reversal of 20003561626410 is 1462616530002.

20003561626410 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 3 + 5 + 6 + 1 + 6 + 2 + 641 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74423382 + ... + 74691678.

It is an arithmetic number, because the mean of its divisors is an integer number (418343656500).

Almost surely, 2^{20003561626410} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003561626410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26773994016000).

20003561626410 is an abundant number, since it is smaller than the sum of its proper divisors (33544426405590).

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

20003561626410 is a wasteful number, since it uses less digits than its factorization.

20003561626410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269373 (or 269367 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 20003561626410 in words is "twenty trillion, three billion, five hundred sixty-one million, six hundred twenty-six thousand, four hundred ten".