20315101545127 has 2 divisors, whose sum is σ = 20315101545128. Its totient is φ = 20315101545126.

The previous prime is 20315101545121. The next prime is 20315101545161. The reversal of 20315101545127 is 72154510151302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20315101545127 is a prime.

It is a super-2 number, since 2×20315101545127² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20315101545121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157550772563 + 10157550772564.

It is an arithmetic number, because the mean of its divisors is an integer number (10157550772564).

Almost surely, 2^{20315101545127} is an apocalyptic number.

20315101545127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315101545127 is an equidigital number, since it uses as much as digits as its factorization.

20315101545127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 37.

Adding to 20315101545127 its reverse (72154510151302), we get a palindrome (92469611696429).

The spelling of 20315101545127 in words is "twenty trillion, three hundred fifteen billion, one hundred one million, five hundred forty-five thousand, one hundred twenty-seven".