64015440361 has 2 divisors, whose sum is σ = 64015440362. Its totient is φ = 64015440360.

The previous prime is 64015440347. The next prime is 64015440371. The reversal of 64015440361 is 16304451046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45302568336 + 18712872025 = 212844^2 + 136795^2 .

It is a cyclic number.

It is not a de Polignac number, because 64015440361 - 2⁹ = 64015439849 is a prime.

It is a super-2 number, since 2×64015440361² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64015440371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32007720180 + 32007720181.

It is an arithmetic number, because the mean of its divisors is an integer number (32007720181).

Almost surely, 2^64015440361 is an apocalyptic number.

It is an amenable number.

64015440361 is a deficient number, since it is larger than the sum of its proper divisors (1).

64015440361 is an equidigital number, since it uses as much as digits as its factorization.

64015440361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 64015440361 in words is "sixty-four billion, fifteen million, four hundred forty thousand, three hundred sixty-one".