64757102549 has 2 divisors, whose sum is σ = 64757102550. Its totient is φ = 64757102548.

The previous prime is 64757102479. The next prime is 64757102569. The reversal of 64757102549 is 94520175746.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64625266225 + 131836324 = 254215^2 + 11482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64757102549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64757102497 and 64757102506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64757102569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32378551274 + 32378551275.

It is an arithmetic number, because the mean of its divisors is an integer number (32378551275).

Almost surely, 2^64757102549 is an apocalyptic number.

It is an amenable number.

64757102549 is a deficient number, since it is larger than the sum of its proper divisors (1).

64757102549 is an equidigital number, since it uses as much as digits as its factorization.

64757102549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 64757102549 in words is "sixty-four billion, seven hundred fifty-seven million, one hundred two thousand, five hundred forty-nine".