136463787731 has 2 divisors, whose sum is σ = 136463787732. Its totient is φ = 136463787730.

The previous prime is 136463787721. The next prime is 136463787793. The reversal of 136463787731 is 137787364631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136463787731 - 2⁶ = 136463787667 is a prime.

It is a super-2 number, since 2×136463787731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136463787721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68231893865 + 68231893866.

It is an arithmetic number, because the mean of its divisors is an integer number (68231893866).

Almost surely, 2^136463787731 is an apocalyptic number.

136463787731 is a deficient number, since it is larger than the sum of its proper divisors (1).

136463787731 is an equidigital number, since it uses as much as digits as its factorization.

136463787731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 56.

The spelling of 136463787731 in words is "one hundred thirty-six billion, four hundred sixty-three million, seven hundred eighty-seven thousand, seven hundred thirty-one".