105156219691 has 2 divisors, whose sum is σ = 105156219692. Its totient is φ = 105156219690.

The previous prime is 105156219601. The next prime is 105156219697. The reversal of 105156219691 is 196912651501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105156219691 - 2¹³ = 105156211499 is a prime.

It is a super-2 number, since 2×105156219691² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105156219697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52578109845 + 52578109846.

It is an arithmetic number, because the mean of its divisors is an integer number (52578109846).

Almost surely, 2^105156219691 is an apocalyptic number.

105156219691 is a deficient number, since it is larger than the sum of its proper divisors (1).

105156219691 is an equidigital number, since it uses as much as digits as its factorization.

105156219691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 46.

The spelling of 105156219691 in words is "one hundred five billion, one hundred fifty-six million, two hundred nineteen thousand, six hundred ninety-one".