135677619731 has 2 divisors, whose sum is σ = 135677619732. Its totient is φ = 135677619730.

The previous prime is 135677619713. The next prime is 135677619793. The reversal of 135677619731 is 137916776531.

Together with previous prime (135677619713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (137916776531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135677619731 - 2¹⁰ = 135677618707 is a prime.

It is a super-2 number, since 2×135677619731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135677669731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67838809865 + 67838809866.

It is an arithmetic number, because the mean of its divisors is an integer number (67838809866).

Almost surely, 2^135677619731 is an apocalyptic number.

135677619731 is a deficient number, since it is larger than the sum of its proper divisors (1).

135677619731 is an equidigital number, since it uses as much as digits as its factorization.

135677619731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000940, while the sum is 56.

The spelling of 135677619731 in words is "one hundred thirty-five billion, six hundred seventy-seven million, six hundred nineteen thousand, seven hundred thirty-one".