20154663141 has 4 divisors (see below), whose sum is σ = 26872884192. Its totient is φ = 13436442092.

The previous prime is 20154663131. The next prime is 20154663149. The reversal of 20154663141 is 14136645102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20154663141 - 2⁹ = 20154662629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154663149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3359110521 + ... + 3359110526.

It is an arithmetic number, because the mean of its divisors is an integer number (6718221048).

Almost surely, 2^20154663141 is an apocalyptic number.

It is an amenable number.

20154663141 is a deficient number, since it is larger than the sum of its proper divisors (6718221051).

20154663141 is an equidigital number, since it uses as much as digits as its factorization.

20154663141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6718221050.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 20154663141 in words is "twenty billion, one hundred fifty-four million, six hundred sixty-three thousand, one hundred forty-one".