11854171445 has 8 divisors (see below), whose sum is σ = 14235981144. Its totient is φ = 9476020224.

The previous prime is 11854171409. The next prime is 11854171493. The reversal of 11854171445 is 54417145811.

It can be written as a sum of positive squares in 4 ways, for example, as 4080398884 + 7773772561 = 63878^2 + 88169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11854171445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907484 + ... + 920453.

It is an arithmetic number, because the mean of its divisors is an integer number (1779497643).

Almost surely, 2^11854171445 is an apocalyptic number.

It is an amenable number.

11854171445 is a deficient number, since it is larger than the sum of its proper divisors (2381809699).

11854171445 is a wasteful number, since it uses less digits than its factorization.

11854171445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829239.

The product of its digits is 89600, while the sum is 41.

The spelling of 11854171445 in words is "eleven billion, eight hundred fifty-four million, one hundred seventy-one thousand, four hundred forty-five".