64124640551 has 2 divisors, whose sum is σ = 64124640552. Its totient is φ = 64124640550.

The previous prime is 64124640533. The next prime is 64124640553. The reversal of 64124640551 is 15504642146.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64124640551 - 2¹⁸ = 64124378407 is a prime.

It is a super-2 number, since 2×64124640551² (a number of 22 digits) contains 22 as substring.

Together with 64124640553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64124640553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32062320275 + 32062320276.

It is an arithmetic number, because the mean of its divisors is an integer number (32062320276).

Almost surely, 2^64124640551 is an apocalyptic number.

64124640551 is a deficient number, since it is larger than the sum of its proper divisors (1).

64124640551 is an equidigital number, since it uses as much as digits as its factorization.

64124640551 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 64124640551 in words is "sixty-four billion, one hundred twenty-four million, six hundred forty thousand, five hundred fifty-one".