20254413617889 has 32 divisors (see below), whose sum is σ = 30138527126400. Its totient is φ = 11996170191360.

The previous prime is 20254413617833. The next prime is 20254413617891. The reversal of 20254413617889 is 98871631445202.

It is a de Polignac number, because none of the positive numbers 2^k-20254413617889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20254413617899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38305354 + ... + 38830515.

It is an arithmetic number, because the mean of its divisors is an integer number (941828972700).

It is a 1-persistent number, because it is pandigital, but 2⋅20254413617889 = 40508827235778 is not.

Almost surely, 2^{20254413617889} is an apocalyptic number.

It is an amenable number.

20254413617889 is a deficient number, since it is larger than the sum of its proper divisors (9884113508511).

20254413617889 is a wasteful number, since it uses less digits than its factorization.

20254413617889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77136065.

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 20254413617889 in words is "twenty trillion, two hundred fifty-four billion, four hundred thirteen million, six hundred seventeen thousand, eight hundred eighty-nine".