136397243503 has 2 divisors, whose sum is σ = 136397243504. Its totient is φ = 136397243502.

The previous prime is 136397243501. The next prime is 136397243509. The reversal of 136397243503 is 305342793631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136397243503 - 2¹ = 136397243501 is a prime.

It is a super-2 number, since 2×136397243503² (a number of 23 digits) contains 22 as substring.

Together with 136397243501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136397243501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68198621751 + 68198621752.

It is an arithmetic number, because the mean of its divisors is an integer number (68198621752).

Almost surely, 2^136397243503 is an apocalyptic number.

136397243503 is a deficient number, since it is larger than the sum of its proper divisors (1).

136397243503 is an equidigital number, since it uses as much as digits as its factorization.

136397243503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 46.

The spelling of 136397243503 in words is "one hundred thirty-six billion, three hundred ninety-seven million, two hundred forty-three thousand, five hundred three".