11246278391 has 16 divisors (see below), whose sum is σ = 11999124960. Its totient is φ = 10510300800.

The previous prime is 11246278369. The next prime is 11246278403. The reversal of 11246278391 is 19387264211.

It is a cyclic number.

It is not a de Polignac number, because 11246278391 - 2⁶ = 11246278327 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11246278091) 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, 520985 + ... + 542141.

It is an arithmetic number, because the mean of its divisors is an integer number (749945310).

Almost surely, 2^11246278391 is an apocalyptic number.

11246278391 is a deficient number, since it is larger than the sum of its proper divisors (752846569).

11246278391 is a wasteful number, since it uses less digits than its factorization.

11246278391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21554.

The product of its digits is 145152, while the sum is 44.

The spelling of 11246278391 in words is "eleven billion, two hundred forty-six million, two hundred seventy-eight thousand, three hundred ninety-one".