64602241577 has 2 divisors, whose sum is σ = 64602241578. Its totient is φ = 64602241576.

The previous prime is 64602241567. The next prime is 64602241621. The reversal of 64602241577 is 77514220646.

It is a happy number.

It is an a-pointer prime, because the next prime (64602241621) can be obtained adding 64602241577 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64429161241 + 173080336 = 253829^2 + 13156^2 .

It is a cyclic number.

It is not a de Polignac number, because 64602241577 - 2²⁰ = 64601193001 is a prime.

It is not a weakly prime, because it can be changed into another prime (64602241567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32301120788 + 32301120789.

It is an arithmetic number, because the mean of its divisors is an integer number (32301120789).

Almost surely, 2^64602241577 is an apocalyptic number.

It is an amenable number.

64602241577 is a deficient number, since it is larger than the sum of its proper divisors (1).

64602241577 is an equidigital number, since it uses as much as digits as its factorization.

64602241577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 64602241577 in words is "sixty-four billion, six hundred two million, two hundred forty-one thousand, five hundred seventy-seven".