105051920105987 has 2 divisors, whose sum is σ = 105051920105988. Its totient is φ = 105051920105986.

The previous prime is 105051920105983. The next prime is 105051920106061. The reversal of 105051920105987 is 789501029150501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105051920105987 - 2² = 105051920105983 is a prime.

It is a super-2 number, since 2×105051920105987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105051920105983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52525960052993 + 52525960052994.

It is an arithmetic number, because the mean of its divisors is an integer number (52525960052994).

Almost surely, 2^{105051920105987} is an apocalyptic number.

105051920105987 is a deficient number, since it is larger than the sum of its proper divisors (1).

105051920105987 is an equidigital number, since it uses as much as digits as its factorization.

105051920105987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 53.

The spelling of 105051920105987 in words is "one hundred five trillion, fifty-one billion, nine hundred twenty million, one hundred five thousand, nine hundred eighty-seven".