20553124452516 has 144 divisors (see below), whose sum is σ = 54082640084928. Its totient is φ = 6575580000000.

The previous prime is 20553124452451. The next prime is 20553124452521. The reversal of 20553124452516 is 61525442135502.

20553124452516 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 3 + 124 + 4 + 5 + 2 + 516 = 666.

It is a super-2 number, since 2×20553124452516² (a number of 27 digits) contains 22 as substring.

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, 72936891 + ... + 73218141.

Almost surely, 2^{20553124452516} 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 20553124452516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27041320042464).

20553124452516 is an abundant number, since it is smaller than the sum of its proper divisors (33529515632412).

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

20553124452516 is a wasteful number, since it uses less digits than its factorization.

20553124452516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282042 (or 282037 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 20553124452516 in words is "twenty trillion, five hundred fifty-three billion, one hundred twenty-four million, four hundred fifty-two thousand, five hundred sixteen".