651542002104431 has 2 divisors, whose sum is σ = 651542002104432. Its totient is φ = 651542002104430.

The previous prime is 651542002104283. The next prime is 651542002104473. The reversal of 651542002104431 is 134401200245156.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651542002104431 is a prime.

It is a super-2 number, since 2×651542002104431² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651542002104031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325771001052215 + 325771001052216.

It is an arithmetic number, because the mean of its divisors is an integer number (325771001052216).

Almost surely, 2^{651542002104431} is an apocalyptic number.

651542002104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

651542002104431 is an equidigital number, since it uses as much as digits as its factorization.

651542002104431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 651542002104431 its reverse (134401200245156), we get a palindrome (785943202349587).

The spelling of 651542002104431 in words is "six hundred fifty-one trillion, five hundred forty-two billion, two million, one hundred four thousand, four hundred thirty-one".