64190701817 has 16 divisors (see below), whose sum is σ = 74770172928. Its totient is φ = 54519899280.

The previous prime is 64190701781. The next prime is 64190701847. The reversal of 64190701817 is 71810709146.

It is not a de Polignac number, because 64190701817 - 2¹² = 64190697721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64190701847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2939333 + ... + 2961090.

It is an arithmetic number, because the mean of its divisors is an integer number (4673135808).

Almost surely, 2^64190701817 is an apocalyptic number.

It is an amenable number.

64190701817 is a deficient number, since it is larger than the sum of its proper divisors (10579471111).

64190701817 is a wasteful number, since it uses less digits than its factorization.

64190701817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900500.

The product of its (nonzero) digits is 84672, while the sum is 44.

The spelling of 64190701817 in words is "sixty-four billion, one hundred ninety million, seven hundred one thousand, eight hundred seventeen".