11571401044639 has 2 divisors, whose sum is σ = 11571401044640. Its totient is φ = 11571401044638.

The previous prime is 11571401044607. The next prime is 11571401044729. The reversal of 11571401044639 is 93644010417511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11571401044639 - 2⁵ = 11571401044607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11571401044739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5785700522319 + 5785700522320.

It is an arithmetic number, because the mean of its divisors is an integer number (5785700522320).

Almost surely, 2^{11571401044639} is an apocalyptic number.

11571401044639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11571401044639 is an equidigital number, since it uses as much as digits as its factorization.

11571401044639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 11571401044639 in words is "eleven trillion, five hundred seventy-one billion, four hundred one million, forty-four thousand, six hundred thirty-nine".