20562146036454 has 128 divisors (see below), whose sum is σ = 46641726996480. Its totient is φ = 5986873929600.

The previous prime is 20562146036441. The next prime is 20562146036461. The reversal of 20562146036454 is 45463064126502.

It is a congruent number.

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, 235444804 + ... + 235532120.

It is an arithmetic number, because the mean of its divisors is an integer number (364388492160).

Almost surely, 2^{20562146036454} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20562146036454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23320863498240).

20562146036454 is an abundant number, since it is smaller than the sum of its proper divisors (26079580960026).

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

20562146036454 is a wasteful number, since it uses less digits than its factorization.

20562146036454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88186.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 20562146036454 in words is "twenty trillion, five hundred sixty-two billion, one hundred forty-six million, thirty-six thousand, four hundred fifty-four".