19827499737149 has 16 divisors (see below), whose sum is σ = 22563108825600. Its totient is φ = 17284952969856.

The previous prime is 19827499737113. The next prime is 19827499737179. The reversal of 19827499737149 is 94173799472891.

It is a de Polignac number, because none of the positive numbers 2^k-19827499737149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19827499737179) 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, 419677064 + ... + 419724305.

It is an arithmetic number, because the mean of its divisors is an integer number (1410194301600).

Almost surely, 2^{19827499737149} is an apocalyptic number.

It is an amenable number.

19827499737149 is a deficient number, since it is larger than the sum of its proper divisors (2735609088451).

19827499737149 is a wasteful number, since it uses less digits than its factorization.

19827499737149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839401484.

The product of its digits is 1728324864, while the sum is 80.

The spelling of 19827499737149 in words is "nineteen trillion, eight hundred twenty-seven billion, four hundred ninety-nine million, seven hundred thirty-seven thousand, one hundred forty-nine".