19417709652157 has 2 divisors, whose sum is σ = 19417709652158. Its totient is φ = 19417709652156.

The previous prime is 19417709652097. The next prime is 19417709652169. The reversal of 19417709652157 is 75125690771491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16901587211716 + 2516122440441 = 4111154^2 + 1586229^2 .

It is an emirp because it is prime and its reverse (75125690771491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19417709652157 - 2²³ = 19417701263549 is a prime.

It is a super-2 number, since 2×19417709652157² (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 (19417709652197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9708854826078 + 9708854826079.

It is an arithmetic number, because the mean of its divisors is an integer number (9708854826079).

Almost surely, 2^{19417709652157} is an apocalyptic number.

It is an amenable number.

19417709652157 is a deficient number, since it is larger than the sum of its proper divisors (1).

19417709652157 is an equidigital number, since it uses as much as digits as its factorization.

19417709652157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33339600, while the sum is 64.

The spelling of 19417709652157 in words is "nineteen trillion, four hundred seventeen billion, seven hundred nine million, six hundred fifty-two thousand, one hundred fifty-seven".