20113515542347 has 2 divisors, whose sum is σ = 20113515542348. Its totient is φ = 20113515542346.

The previous prime is 20113515542317. The next prime is 20113515542413. The reversal of 20113515542347 is 74324551531102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20113515542347 - 2¹⁹ = 20113515018059 is a prime.

It is not a weakly prime, because it can be changed into another prime (20113515542317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056757771173 + 10056757771174.

It is an arithmetic number, because the mean of its divisors is an integer number (10056757771174).

Almost surely, 2^{20113515542347} is an apocalyptic number.

20113515542347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113515542347 is an equidigital number, since it uses as much as digits as its factorization.

20113515542347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 20113515542347 in words is "twenty trillion, one hundred thirteen billion, five hundred fifteen million, five hundred forty-two thousand, three hundred forty-seven".