5196799981 has 2 divisors, whose sum is σ = 5196799982. Its totient is φ = 5196799980.

The previous prime is 5196799969. The next prime is 5196800083. The reversal of 5196799981 is 1899976915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4973775625 + 223024356 = 70525^2 + 14934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5196799981 is a prime.

It is a super-2 number, since 2×5196799981² = 54013460085043200722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5196796981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2598399990 + 2598399991.

It is an arithmetic number, because the mean of its divisors is an integer number (2598399991).

Almost surely, 2^5196799981 is an apocalyptic number.

It is an amenable number.

5196799981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5196799981 is an equidigital number, since it uses as much as digits as its factorization.

5196799981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 64.

The square root of 5196799981 is about 72088.8339550585. The cubic root of 5196799981 is about 1732.1227555017.

The spelling of 5196799981 in words is "five billion, one hundred ninety-six million, seven hundred ninety-nine thousand, nine hundred eighty-one".