20148618773047 has 2 divisors, whose sum is σ = 20148618773048. Its totient is φ = 20148618773046.

The previous prime is 20148618773033. The next prime is 20148618773057. The reversal of 20148618773047 is 74037781684102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20148618773047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20148618772982 and 20148618773000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20148618773057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10074309386523 + 10074309386524.

It is an arithmetic number, because the mean of its divisors is an integer number (10074309386524).

Almost surely, 2^{20148618773047} is an apocalyptic number.

20148618773047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20148618773047 is an equidigital number, since it uses as much as digits as its factorization.

20148618773047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 20148618773047 in words is "twenty trillion, one hundred forty-eight billion, six hundred eighteen million, seven hundred seventy-three thousand, forty-seven".