20154368153 has 2 divisors, whose sum is σ = 20154368154. Its totient is φ = 20154368152.

The previous prime is 20154368149. The next prime is 20154368197. The reversal of 20154368153 is 35186345102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14560524889 + 5593843264 = 120667^2 + 74792^2 .

It is a cyclic number.

It is not a de Polignac number, because 20154368153 - 2² = 20154368149 is a prime.

It is not a weakly prime, because it can be changed into another prime (20154368053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077184076 + 10077184077.

It is an arithmetic number, because the mean of its divisors is an integer number (10077184077).

Almost surely, 2^20154368153 is an apocalyptic number.

It is an amenable number.

20154368153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20154368153 is an equidigital number, since it uses as much as digits as its factorization.

20154368153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 20154368153 in words is "twenty billion, one hundred fifty-four million, three hundred sixty-eight thousand, one hundred fifty-three".