66414531365 has 16 divisors (see below), whose sum is σ = 98089154688. Its totient is φ = 42038208576.

The previous prime is 66414531311. The next prime is 66414531371. The reversal of 66414531365 is 56313541466.

It is not a de Polignac number, because 66414531365 - 2⁶ = 66414531301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72982547 + ... + 72983456.

It is an arithmetic number, because the mean of its divisors is an integer number (6130572168).

Almost surely, 2^66414531365 is an apocalyptic number.

66414531365 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66414531365 is a deficient number, since it is larger than the sum of its proper divisors (31674623323).

66414531365 is a wasteful number, since it uses less digits than its factorization.

66414531365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145966028.

The product of its digits is 777600, while the sum is 44.

The spelling of 66414531365 in words is "sixty-six billion, four hundred fourteen million, five hundred thirty-one thousand, three hundred sixty-five".