19416556141 has 2 divisors, whose sum is σ = 19416556142. Its totient is φ = 19416556140.

The previous prime is 19416556121. The next prime is 19416556169. The reversal of 19416556141 is 14165561491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19305990916 + 110565225 = 138946^2 + 10515^2 .

It is a cyclic number.

It is not a de Polignac number, because 19416556141 - 2⁵ = 19416556109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19416556111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9708278070 + 9708278071.

It is an arithmetic number, because the mean of its divisors is an integer number (9708278071).

Almost surely, 2^19416556141 is an apocalyptic number.

It is an amenable number.

19416556141 is a deficient number, since it is larger than the sum of its proper divisors (1).

19416556141 is an equidigital number, since it uses as much as digits as its factorization.

19416556141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 43.

The spelling of 19416556141 in words is "nineteen billion, four hundred sixteen million, five hundred fifty-six thousand, one hundred forty-one".