19908288011 has 2 divisors, whose sum is σ = 19908288012. Its totient is φ = 19908288010.

The previous prime is 19908287977. The next prime is 19908288019. The reversal of 19908288011 is 11088280991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19908288011 - 2¹⁴ = 19908271627 is a prime.

It is a super-2 number, since 2×19908288011² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19908288019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9954144005 + 9954144006.

It is an arithmetic number, because the mean of its divisors is an integer number (9954144006).

Almost surely, 2^19908288011 is an apocalyptic number.

19908288011 is a deficient number, since it is larger than the sum of its proper divisors (1).

19908288011 is an equidigital number, since it uses as much as digits as its factorization.

19908288011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 47.

The spelling of 19908288011 in words is "nineteen billion, nine hundred eight million, two hundred eighty-eight thousand, eleven".