613008671881 has 2 divisors, whose sum is σ = 613008671882. Its totient is φ = 613008671880.

The previous prime is 613008671843. The next prime is 613008671911. The reversal of 613008671881 is 188176800316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612243651600 + 765020281 = 782460^2 + 27659^2 .

It is a cyclic number.

It is not a de Polignac number, because 613008671881 - 2¹³ = 613008663689 is a prime.

It is a super-2 number, since 2×613008671881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (613008674881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306504335940 + 306504335941.

It is an arithmetic number, because the mean of its divisors is an integer number (306504335941).

Almost surely, 2^613008671881 is an apocalyptic number.

It is an amenable number.

613008671881 is a deficient number, since it is larger than the sum of its proper divisors (1).

613008671881 is an equidigital number, since it uses as much as digits as its factorization.

613008671881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 49.

The spelling of 613008671881 in words is "six hundred thirteen billion, eight million, six hundred seventy-one thousand, eight hundred eighty-one".