20554126416 has 120 divisors (see below), whose sum is σ = 60385777920. Its totient is φ = 6517900800.

The previous prime is 20554126381. The next prime is 20554126427. The reversal of 20554126416 is 61462145502.

20554126416 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 4 + 1 + 2 + 641 + 6 = 666.

It is a super-2 number, since 2×20554126416² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224356 + ... + 302396.

It is an arithmetic number, because the mean of its divisors is an integer number (503214816).

Almost surely, 2^20554126416 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 20554126416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30192888960).

20554126416 is an abundant number, since it is smaller than the sum of its proper divisors (39831651504).

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

20554126416 is a wasteful number, since it uses less digits than its factorization.

20554126416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78145 (or 78136 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20554126416 in words is "twenty billion, five hundred fifty-four million, one hundred twenty-six thousand, four hundred sixteen".