135497609999 has 16 divisors (see below), whose sum is σ = 146297664000. Its totient is φ = 125023749504.

The previous prime is 135497609993. The next prime is 135497610029. The reversal of 135497609999 is 999906794531.

It is a Cunningham number, because it is equal to 368100²-1.

It is a cyclic number.

It is not a de Polignac number, because 135497609999 - 2²⁰ = 135496561423 is a prime.

It is a super-2 number, since 2×135497609999² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135497609993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184052 + ... + 552150.

It is an arithmetic number, because the mean of its divisors is an integer number (9143604000).

Almost surely, 2^135497609999 is an apocalyptic number.

135497609999 is a deficient number, since it is larger than the sum of its proper divisors (10800054001).

135497609999 is a wasteful number, since it uses less digits than its factorization.

135497609999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368542.

The product of its (nonzero) digits is 148803480, while the sum is 71.

The spelling of 135497609999 in words is "one hundred thirty-five billion, four hundred ninety-seven million, six hundred nine thousand, nine hundred ninety-nine".