102406021607 has 2 divisors, whose sum is σ = 102406021608. Its totient is φ = 102406021606.

The previous prime is 102406021603. The next prime is 102406021687. The reversal of 102406021607 is 706120604201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102406021607 - 2² = 102406021603 is a prime.

It is a super-2 number, since 2×102406021607² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102406021607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102406021603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51203010803 + 51203010804.

It is an arithmetic number, because the mean of its divisors is an integer number (51203010804).

Almost surely, 2^102406021607 is an apocalyptic number.

102406021607 is a deficient number, since it is larger than the sum of its proper divisors (1).

102406021607 is an equidigital number, since it uses as much as digits as its factorization.

102406021607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 102406021607 its reverse (706120604201), we get a palindrome (808526625808).

The spelling of 102406021607 in words is "one hundred two billion, four hundred six million, twenty-one thousand, six hundred seven".