66484043515 has 32 divisors (see below), whose sum is σ = 87208611840. Its totient is φ = 48470140800.

The previous prime is 66484043503. The next prime is 66484043531. The reversal of 66484043515 is 51534048466.

It is not a de Polignac number, because 66484043515 - 2²³ = 66475654907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424225 + ... + 559405.

It is an arithmetic number, because the mean of its divisors is an integer number (2725269120).

Almost surely, 2^66484043515 is an apocalyptic number.

66484043515 is a deficient number, since it is larger than the sum of its proper divisors (20724568325).

66484043515 is a wasteful number, since it uses less digits than its factorization.

66484043515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135403.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 66484043515 in words is "sixty-six billion, four hundred eighty-four million, forty-three thousand, five hundred fifteen".