64414989187 has 16 divisors (see below), whose sum is σ = 70758144000. Its totient is φ = 58375278720.

The previous prime is 64414989139. The next prime is 64414989227. The reversal of 64414989187 is 78198941446.

It is a cyclic number.

It is not a de Polignac number, because 64414989187 - 2¹⁹ = 64414464899 is a prime.

It is a super-2 number, since 2×64414989187² (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 (64414989787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202237 + ... + 411982.

It is an arithmetic number, because the mean of its divisors is an integer number (4422384000).

Almost surely, 2^64414989187 is an apocalyptic number.

64414989187 is a deficient number, since it is larger than the sum of its proper divisors (6343154813).

64414989187 is a wasteful number, since it uses less digits than its factorization.

64414989187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614466.

The product of its digits is 13934592, while the sum is 61.

The spelling of 64414989187 in words is "sixty-four billion, four hundred fourteen million, nine hundred eighty-nine thousand, one hundred eighty-seven".