651060511121 has 2 divisors, whose sum is σ = 651060511122. Its totient is φ = 651060511120.

The previous prime is 651060511109. The next prime is 651060511141. The reversal of 651060511121 is 121115060156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416591502721 + 234469008400 = 645439^2 + 484220^2 .

It is a cyclic number.

It is not a de Polignac number, because 651060511121 - 2¹⁰ = 651060510097 is a prime.

It is a super-2 number, since 2×651060511121² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (651060511141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325530255560 + 325530255561.

It is an arithmetic number, because the mean of its divisors is an integer number (325530255561).

Almost surely, 2^651060511121 is an apocalyptic number.

It is an amenable number.

651060511121 is a deficient number, since it is larger than the sum of its proper divisors (1).

651060511121 is an equidigital number, since it uses as much as digits as its factorization.

651060511121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 29.

Adding to 651060511121 its reverse (121115060156), we get a palindrome (772175571277).

The spelling of 651060511121 in words is "six hundred fifty-one billion, sixty million, five hundred eleven thousand, one hundred twenty-one".