64687029241 has 2 divisors, whose sum is σ = 64687029242. Its totient is φ = 64687029240.

The previous prime is 64687029109. The next prime is 64687029247. The reversal of 64687029241 is 14292078646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48461619600 + 16225409641 = 220140^2 + 127379^2 .

It is a cyclic number.

It is not a de Polignac number, because 64687029241 - 2²³ = 64678640633 is a prime.

It is not a weakly prime, because it can be changed into another prime (64687029247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32343514620 + 32343514621.

It is an arithmetic number, because the mean of its divisors is an integer number (32343514621).

Almost surely, 2^64687029241 is an apocalyptic number.

It is an amenable number.

64687029241 is a deficient number, since it is larger than the sum of its proper divisors (1).

64687029241 is an equidigital number, since it uses as much as digits as its factorization.

64687029241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 64687029241 in words is "sixty-four billion, six hundred eighty-seven million, twenty-nine thousand, two hundred forty-one".