102644242252 has 6 divisors (see below), whose sum is σ = 179627423948. Its totient is φ = 51322121124.

The previous prime is 102644242249. The next prime is 102644242297. The reversal of 102644242252 is 252242446201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12830530278 + ... + 12830530285.

Almost surely, 2^102644242252 is an apocalyptic number.

It is an amenable number.

102644242252 is a deficient number, since it is larger than the sum of its proper divisors (76983181696).

102644242252 is a wasteful number, since it uses less digits than its factorization.

102644242252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25661060567 (or 25661060565 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 102644242252 its reverse (252242446201), we get a palindrome (354886688453).

The spelling of 102644242252 in words is "one hundred two billion, six hundred forty-four million, two hundred forty-two thousand, two hundred fifty-two".