102650424249 has 4 divisors (see below), whose sum is σ = 136867232336. Its totient is φ = 68433616164.

The previous prime is 102650424211. The next prime is 102650424269. The reversal of 102650424249 is 942424056201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 942424056201 = 3 ⋅314141352067.

It is not a de Polignac number, because 102650424249 - 2²¹ = 102648327097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102650424269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17108404039 + ... + 17108404044.

It is an arithmetic number, because the mean of its divisors is an integer number (34216808084).

Almost surely, 2^102650424249 is an apocalyptic number.

It is an amenable number.

102650424249 is a deficient number, since it is larger than the sum of its proper divisors (34216808087).

102650424249 is an equidigital number, since it uses as much as digits as its factorization.

102650424249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34216808086.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 102650424249 in words is "one hundred two billion, six hundred fifty million, four hundred twenty-four thousand, two hundred forty-nine".