20315124541429 has 2 divisors, whose sum is σ = 20315124541430. Its totient is φ = 20315124541428.

The previous prime is 20315124541423. The next prime is 20315124541433. The reversal of 20315124541429 is 92414542151302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13513512701329 + 6801611840100 = 3676073^2 + 2607990^2 .

It is a cyclic number.

It is not a de Polignac number, because 20315124541429 - 2⁷ = 20315124541301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20315124541423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157562270714 + 10157562270715.

It is an arithmetic number, because the mean of its divisors is an integer number (10157562270715).

Almost surely, 2^{20315124541429} is an apocalyptic number.

It is an amenable number.

20315124541429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315124541429 is an equidigital number, since it uses as much as digits as its factorization.

20315124541429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 20315124541429 in words is "twenty trillion, three hundred fifteen billion, one hundred twenty-four million, five hundred forty-one thousand, four hundred twenty-nine".