11071420819 has 2 divisors, whose sum is σ = 11071420820. Its totient is φ = 11071420818.

The previous prime is 11071420807. The next prime is 11071420847. The reversal of 11071420819 is 91802417011.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11071420819 is a prime.

It is a super-2 number, since 2×11071420819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11071420519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535710409 + 5535710410.

It is an arithmetic number, because the mean of its divisors is an integer number (5535710410).

Almost surely, 2^11071420819 is an apocalyptic number.

11071420819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11071420819 is an equidigital number, since it uses as much as digits as its factorization.

11071420819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 11071420819 in words is "eleven billion, seventy-one million, four hundred twenty thousand, eight hundred nineteen".