20144535525254 has 16 divisors (see below), whose sum is σ = 34542014251776. Its totient is φ = 8631241173000.

The previous prime is 20144535525253. The next prime is 20144535525329. The reversal of 20144535525254 is 45252553544102.

It is a junction number, because it is equal to n+sod(n) for n = 20144535525199 and 20144535525208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144535525253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177540842 + ... + 177654269.

It is an arithmetic number, because the mean of its divisors is an integer number (2158875890736).

Almost surely, 2^{20144535525254} is an apocalyptic number.

20144535525254 is a deficient number, since it is larger than the sum of its proper divisors (14397478726522).

20144535525254 is a wasteful number, since it uses less digits than its factorization.

20144535525254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355199171.

The product of its (nonzero) digits is 4800000, while the sum is 47.

The spelling of 20144535525254 in words is "twenty trillion, one hundred forty-four billion, five hundred thirty-five million, five hundred twenty-five thousand, two hundred fifty-four".