21749199070041 has 32 divisors (see below), whose sum is σ = 33033729738240. Its totient is φ = 14134328323200.

The previous prime is 21749199070019. The next prime is 21749199070057. The reversal of 21749199070041 is 14007099194712.

21749199070041 is a `hidden beast` number, since 21 + 7 + 491 + 9 + 90 + 7 + 0 + 0 + 41 = 666.

It is not a de Polignac number, because 21749199070041 - 2¹¹ = 21749199067993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21749199070041.

It is not an unprimeable number, because it can be changed into a prime (21749199070541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6617370 + ... + 9342803.

It is an arithmetic number, because the mean of its divisors is an integer number (1032304054320).

Almost surely, 2^{21749199070041} is an apocalyptic number.

It is an amenable number.

21749199070041 is a deficient number, since it is larger than the sum of its proper divisors (11284530668199).

21749199070041 is a wasteful number, since it uses less digits than its factorization.

21749199070041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15961454 (or 15961448 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The spelling of 21749199070041 in words is "twenty-one trillion, seven hundred forty-nine billion, one hundred ninety-nine million, seventy thousand, forty-one".