102005343787 has 2 divisors, whose sum is σ = 102005343788. Its totient is φ = 102005343786.

The previous prime is 102005343767. The next prime is 102005343859. The reversal of 102005343787 is 787343500201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102005343787 is a prime.

It is a super-2 number, since 2×102005343787² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102005343767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51002671893 + 51002671894.

It is an arithmetic number, because the mean of its divisors is an integer number (51002671894).

Almost surely, 2^102005343787 is an apocalyptic number.

102005343787 is a deficient number, since it is larger than the sum of its proper divisors (1).

102005343787 is an equidigital number, since it uses as much as digits as its factorization.

102005343787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

Adding to 102005343787 its reverse (787343500201), we get a palindrome (889348843988).

The spelling of 102005343787 in words is "one hundred two billion, five million, three hundred forty-three thousand, seven hundred eighty-seven".