1291578028293 has 16 divisors (see below), whose sum is σ = 1968136209536. Its totient is φ = 738038096640.

The previous prime is 1291578028283. The next prime is 1291578028303. The reversal of 1291578028293 is 3928208751921.

It is an interprime number because it is at equal distance from previous prime (1291578028283) and next prime (1291578028303).

It is not a de Polignac number, because 1291578028293 - 2⁹ = 1291578027781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291578028283) 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, 3224433 + ... + 3602793.

It is an arithmetic number, because the mean of its divisors is an integer number (123008513096).

Almost surely, 2^{1291578028293} is an apocalyptic number.

It is an amenable number.

1291578028293 is a deficient number, since it is larger than the sum of its proper divisors (676558181243).

1291578028293 is a wasteful number, since it uses less digits than its factorization.

1291578028293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540924.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 1291578028293 in words is "one trillion, two hundred ninety-one billion, five hundred seventy-eight million, twenty-eight thousand, two hundred ninety-three".