73135136517 has 4 divisors (see below), whose sum is σ = 97513515360. Its totient is φ = 48756757676.

The previous prime is 73135136513. The next prime is 73135136531. The reversal of 73135136517 is 71563153137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73135136517 - 2² = 73135136513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73135136513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12189189417 + ... + 12189189422.

It is an arithmetic number, because the mean of its divisors is an integer number (24378378840).

Almost surely, 2^73135136517 is an apocalyptic number.

It is an amenable number.

73135136517 is a deficient number, since it is larger than the sum of its proper divisors (24378378843).

73135136517 is a wasteful number, since it uses less digits than its factorization.

73135136517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24378378842.

The product of its digits is 198450, while the sum is 42.

The spelling of 73135136517 in words is "seventy-three billion, one hundred thirty-five million, one hundred thirty-six thousand, five hundred seventeen".