101919418543 has 2 divisors, whose sum is σ = 101919418544. Its totient is φ = 101919418542.

The previous prime is 101919418477. The next prime is 101919418567. The reversal of 101919418543 is 345814919101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101919418543 is a prime.

It is a super-2 number, since 2×101919418543² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101919418493 and 101919418502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101919418343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50959709271 + 50959709272.

It is an arithmetic number, because the mean of its divisors is an integer number (50959709272).

Almost surely, 2^101919418543 is an apocalyptic number.

101919418543 is a deficient number, since it is larger than the sum of its proper divisors (1).

101919418543 is an equidigital number, since it uses as much as digits as its factorization.

101919418543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 101919418543 in words is "one hundred one billion, nine hundred nineteen million, four hundred eighteen thousand, five hundred forty-three".