20154516433 has 2 divisors, whose sum is σ = 20154516434. Its totient is φ = 20154516432.

The previous prime is 20154516377. The next prime is 20154516467. The reversal of 20154516433 is 33461545102.

It is an a-pointer prime, because the next prime (20154516467) can be obtained adding 20154516433 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18502256529 + 1652259904 = 136023^2 + 40648^2 .

It is a cyclic number.

It is not a de Polignac number, because 20154516433 - 2⁹ = 20154515921 is a prime.

It is not a weakly prime, because it can be changed into another prime (20154816433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077258216 + 10077258217.

It is an arithmetic number, because the mean of its divisors is an integer number (10077258217).

Almost surely, 2^20154516433 is an apocalyptic number.

It is an amenable number.

20154516433 is a deficient number, since it is larger than the sum of its proper divisors (1).

20154516433 is an equidigital number, since it uses as much as digits as its factorization.

20154516433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 20154516433 in words is "twenty billion, one hundred fifty-four million, five hundred sixteen thousand, four hundred thirty-three".