20355470153 has 2 divisors, whose sum is σ = 20355470154. Its totient is φ = 20355470152.

The previous prime is 20355470111. The next prime is 20355470167. The reversal of 20355470153 is 35107455302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20355299584 + 170569 = 142672^2 + 413^2 .

It is a cyclic number.

It is not a de Polignac number, because 20355470153 - 2¹⁶ = 20355404617 is a prime.

It is not a weakly prime, because it can be changed into another prime (20355472153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177735076 + 10177735077.

It is an arithmetic number, because the mean of its divisors is an integer number (10177735077).

Almost surely, 2^20355470153 is an apocalyptic number.

It is an amenable number.

20355470153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20355470153 is an equidigital number, since it uses as much as digits as its factorization.

20355470153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 35.

The spelling of 20355470153 in words is "twenty billion, three hundred fifty-five million, four hundred seventy thousand, one hundred fifty-three".