651244262443 has 2 divisors, whose sum is σ = 651244262444. Its totient is φ = 651244262442.

The previous prime is 651244262377. The next prime is 651244262477. The reversal of 651244262443 is 344262442156.

651244262443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 651244262443 - 2³⁷ = 513805308971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 651244262443.

It is not a weakly prime, because it can be changed into another prime (651244263443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325622131221 + 325622131222.

It is an arithmetic number, because the mean of its divisors is an integer number (325622131222).

Almost surely, 2^651244262443 is an apocalyptic number.

651244262443 is a deficient number, since it is larger than the sum of its proper divisors (1).

651244262443 is an equidigital number, since it uses as much as digits as its factorization.

651244262443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 43.

The spelling of 651244262443 in words is "six hundred fifty-one billion, two hundred forty-four million, two hundred sixty-two thousand, four hundred forty-three".