64740207169 has 8 divisors (see below), whose sum is σ = 71593156512. Its totient is φ = 58048503840.

The previous prime is 64740207167. The next prime is 64740207193. The reversal of 64740207169 is 96170204746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64740207169 - 2¹ = 64740207167 is a prime.

It is a super-2 number, since 2×64740207169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64740207167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40310659 + ... + 40312264.

It is an arithmetic number, because the mean of its divisors is an integer number (8949144564).

Almost surely, 2^64740207169 is an apocalyptic number.

It is an amenable number.

64740207169 is a deficient number, since it is larger than the sum of its proper divisors (6852949343).

64740207169 is a wasteful number, since it uses less digits than its factorization.

64740207169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80623007.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 64740207169 in words is "sixty-four billion, seven hundred forty million, two hundred seven thousand, one hundred sixty-nine".