66150015601 has 8 divisors (see below), whose sum is σ = 68433319424. Its totient is φ = 63876051360.

The previous prime is 66150015587. The next prime is 66150015623. The reversal of 66150015601 is 10651005166.

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 66150015601 - 2⁷ = 66150015473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66150015901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2320485 + ... + 2348818.

It is an arithmetic number, because the mean of its divisors is an integer number (8554164928).

Almost surely, 2^66150015601 is an apocalyptic number.

It is an amenable number.

66150015601 is a deficient number, since it is larger than the sum of its proper divisors (2283303823).

66150015601 is a wasteful number, since it uses less digits than its factorization.

66150015601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669791.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 66150015601 in words is "sixty-six billion, one hundred fifty million, fifteen thousand, six hundred one".