11361857888549 has 16 divisors (see below), whose sum is σ = 13230018232320. Its totient is φ = 9556469573040.

The previous prime is 11361857888533. The next prime is 11361857888551. The reversal of 11361857888549 is 94588875816311.

It is a cyclic number.

It is not a de Polignac number, because 11361857888549 - 2⁴ = 11361857888533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11361857888449) 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, 62933957 + ... + 63114234.

It is an arithmetic number, because the mean of its divisors is an integer number (826876139520).

Almost surely, 2^{11361857888549} is an apocalyptic number.

It is an amenable number.

11361857888549 is a deficient number, since it is larger than the sum of its proper divisors (1868160343771).

11361857888549 is a wasteful number, since it uses less digits than its factorization.

11361857888549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126048440.

The product of its digits is 464486400, while the sum is 74.

The spelling of 11361857888549 in words is "eleven trillion, three hundred sixty-one billion, eight hundred fifty-seven million, eight hundred eighty-eight thousand, five hundred forty-nine".