1291403661814 has 32 divisors (see below), whose sum is σ = 2281616789760. Its totient is φ = 536698425312.

The previous prime is 1291403661719. The next prime is 1291403661817. The reversal of 1291403661814 is 4181663041921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291403661817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7632829 + ... + 7800184.

It is an arithmetic number, because the mean of its divisors is an integer number (71300524680).

Almost surely, 2^{1291403661814} is an apocalyptic number.

1291403661814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1291403661814 is a deficient number, since it is larger than the sum of its proper divisors (990213127946).

1291403661814 is a wasteful number, since it uses less digits than its factorization.

1291403661814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15433204.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 1291403661814 in words is "one trillion, two hundred ninety-one billion, four hundred three million, six hundred sixty-one thousand, eight hundred fourteen".