105500212639 has 2 divisors, whose sum is σ = 105500212640. Its totient is φ = 105500212638.

The previous prime is 105500212621. The next prime is 105500212681. The reversal of 105500212639 is 936212005501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105500212639 - 2²¹ = 105498115487 is a prime.

It is a super-2 number, since 2×105500212639² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105500212339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52750106319 + 52750106320.

It is an arithmetic number, because the mean of its divisors is an integer number (52750106320).

Almost surely, 2^105500212639 is an apocalyptic number.

105500212639 is a deficient number, since it is larger than the sum of its proper divisors (1).

105500212639 is an equidigital number, since it uses as much as digits as its factorization.

105500212639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 105500212639 in words is "one hundred five billion, five hundred million, two hundred twelve thousand, six hundred thirty-nine".