816129114613 has 4 divisors (see below), whose sum is σ = 859083278560. Its totient is φ = 773174950668.

The previous prime is 816129114557. The next prime is 816129114707. The reversal of 816129114613 is 316411921618.

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 816129114613 - 2¹⁷ = 816128983541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 816129114613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816129114013) 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, 21477081945 + ... + 21477081982.

It is an arithmetic number, because the mean of its divisors is an integer number (214770819640).

Almost surely, 2^816129114613 is an apocalyptic number.

It is an amenable number.

816129114613 is a deficient number, since it is larger than the sum of its proper divisors (42954163947).

816129114613 is a wasteful number, since it uses less digits than its factorization.

816129114613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42954163946.

The product of its digits is 62208, while the sum is 43.

The spelling of 816129114613 in words is "eight hundred sixteen billion, one hundred twenty-nine million, one hundred fourteen thousand, six hundred thirteen".