66007435615 has 16 divisors (see below), whose sum is σ = 90166680576. Its totient is φ = 45918215200.

The previous prime is 66007435609. The next prime is 66007435643. The reversal of 66007435615 is 51653470066.

It is not a de Polignac number, because 66007435615 - 2²¹ = 66005338463 is a prime.

It is a Duffinian number.

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, 26088631 + ... + 26091160.

It is an arithmetic number, because the mean of its divisors is an integer number (5635417536).

Almost surely, 2^66007435615 is an apocalyptic number.

66007435615 is a deficient number, since it is larger than the sum of its proper divisors (24159244961).

66007435615 is a wasteful number, since it uses less digits than its factorization.

66007435615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52179830.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 66007435615 in words is "sixty-six billion, seven million, four hundred thirty-five thousand, six hundred fifteen".