136021081019 has 2 divisors, whose sum is σ = 136021081020. Its totient is φ = 136021081018.

The previous prime is 136021081013. The next prime is 136021081057. The reversal of 136021081019 is 910180120631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136021081019 is a prime.

It is a super-2 number, since 2×136021081019² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (136021081013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68010540509 + 68010540510.

It is an arithmetic number, because the mean of its divisors is an integer number (68010540510).

Almost surely, 2^136021081019 is an apocalyptic number.

136021081019 is a deficient number, since it is larger than the sum of its proper divisors (1).

136021081019 is an equidigital number, since it uses as much as digits as its factorization.

136021081019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 136021081019 in words is "one hundred thirty-six billion, twenty-one million, eighty-one thousand, nineteen".