20551410361504 has 96 divisors (see below), whose sum is σ = 44614626844032. Its totient is φ = 9318246784000.

The previous prime is 20551410361487. The next prime is 20551410361529. The reversal of 20551410361504 is 40516301415502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16477749 + ... + 17681035.

It is an arithmetic number, because the mean of its divisors is an integer number (464735696292).

Almost surely, 2^{20551410361504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20551410361504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22307313422016).

20551410361504 is an abundant number, since it is smaller than the sum of its proper divisors (24063216482528).

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

20551410361504 is a wasteful number, since it uses less digits than its factorization.

20551410361504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203731 (or 1203701 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 20551410361504 in words is "twenty trillion, five hundred fifty-one billion, four hundred ten million, three hundred sixty-one thousand, five hundred four".