667474336112015 has 4 divisors (see below), whose sum is σ = 800969203334424. Its totient is φ = 533979468889608.

The previous prime is 667474336112009. The next prime is 667474336112047. The reversal of 667474336112015 is 510211633474766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 667474336112015 - 2²⁰ = 667474335063439 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 3 ways as a sum of consecutive naturals, for example, 66747433611197 + ... + 66747433611206.

It is an arithmetic number, because the mean of its divisors is an integer number (200242300833606).

Almost surely, 2^{667474336112015} is an apocalyptic number.

667474336112015 is a deficient number, since it is larger than the sum of its proper divisors (133494867222409).

667474336112015 is a wasteful number, since it uses less digits than its factorization.

667474336112015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133494867222408.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 667474336112015 in words is "six hundred sixty-seven trillion, four hundred seventy-four billion, three hundred thirty-six million, one hundred twelve thousand, fifteen".