651131113541 has 2 divisors, whose sum is σ = 651131113542. Its totient is φ = 651131113540.

The previous prime is 651131113483. The next prime is 651131113561. The reversal of 651131113541 is 145311131156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535567830625 + 115563282916 = 731825^2 + 339946^2 .

It is a cyclic number.

It is not a de Polignac number, because 651131113541 - 2³⁸ = 376253206597 is a prime.

It is a super-2 number, since 2×651131113541² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 651131113498 and 651131113507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651131113561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325565556770 + 325565556771.

It is an arithmetic number, because the mean of its divisors is an integer number (325565556771).

Almost surely, 2^651131113541 is an apocalyptic number.

It is an amenable number.

651131113541 is a deficient number, since it is larger than the sum of its proper divisors (1).

651131113541 is an equidigital number, since it uses as much as digits as its factorization.

651131113541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 32.

Adding to 651131113541 its reverse (145311131156), we get a palindrome (796442244697).

The spelling of 651131113541 in words is "six hundred fifty-one billion, one hundred thirty-one million, one hundred thirteen thousand, five hundred forty-one".