613136521873 has 8 divisors (see below), whose sum is σ = 615188486528. Its totient is φ = 611087488704.

The previous prime is 613136521853. The next prime is 613136521891. The reversal of 613136521873 is 378125631316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 613136521873 - 2⁵ = 613136521841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613136521853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313461 + ... + 1150882.

It is an arithmetic number, because the mean of its divisors is an integer number (76898560816).

Almost surely, 2^613136521873 is an apocalyptic number.

It is an amenable number.

613136521873 is a deficient number, since it is larger than the sum of its proper divisors (2051964655).

613136521873 is a wasteful number, since it uses less digits than its factorization.

613136521873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465743.

The product of its digits is 544320, while the sum is 46.

The spelling of 613136521873 in words is "six hundred thirteen billion, one hundred thirty-six million, five hundred twenty-one thousand, eight hundred seventy-three".