1291460667506 has 8 divisors (see below), whose sum is σ = 1937231961840. Its totient is φ = 645716680228.

The previous prime is 1291460667499. The next prime is 1291460667589. The reversal of 1291460667506 is 6057660641921.

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

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6708116 + ... + 6897951.

It is an arithmetic number, because the mean of its divisors is an integer number (242153995230).

Almost surely, 2^{1291460667506} is an apocalyptic number.

1291460667506 is a deficient number, since it is larger than the sum of its proper divisors (645771294334).

1291460667506 is a wasteful number, since it uses less digits than its factorization.

1291460667506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13653528.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 1291460667506 in words is "one trillion, two hundred ninety-one billion, four hundred sixty million, six hundred sixty-seven thousand, five hundred six".