20153226473 has 2 divisors, whose sum is σ = 20153226474. Its totient is φ = 20153226472.

The previous prime is 20153226463. The next prime is 20153226517. The reversal of 20153226473 is 37462235102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19652675344 + 500551129 = 140188^2 + 22373^2 .

It is a cyclic number.

It is not a de Polignac number, because 20153226473 - 2⁶ = 20153226409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20153226463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076613236 + 10076613237.

It is an arithmetic number, because the mean of its divisors is an integer number (10076613237).

Almost surely, 2^20153226473 is an apocalyptic number.

It is an amenable number.

20153226473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20153226473 is an equidigital number, since it uses as much as digits as its factorization.

20153226473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 20153226473 in words is "twenty billion, one hundred fifty-three million, two hundred twenty-six thousand, four hundred seventy-three".