667370561601511 has 8 divisors (see below), whose sum is σ = 690383695428000. Its totient is φ = 644357451497760.

The previous prime is 667370561601509. The next prime is 667370561601547. The reversal of 667370561601511 is 115106165073766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667370561601511 - 2¹ = 667370561601509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667370561601911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66153790 + ... + 75571588.

It is an arithmetic number, because the mean of its divisors is an integer number (86297961928500).

Almost surely, 2^{667370561601511} is an apocalyptic number.

667370561601511 is a deficient number, since it is larger than the sum of its proper divisors (23013133826489).

667370561601511 is a wasteful number, since it uses less digits than its factorization.

667370561601511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861369.

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 667370561601511 in words is "six hundred sixty-seven trillion, three hundred seventy billion, five hundred sixty-one million, six hundred one thousand, five hundred eleven".