102153505444 has 48 divisors (see below), whose sum is σ = 191505792240. Its totient is φ = 47508623360.

The previous prime is 102153505417. The next prime is 102153505469. The reversal of 102153505444 is 444505351201.

It can be written as a sum of positive squares in 8 ways, for example, as 8707129344 + 93446376100 = 93312^2 + 305690^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20943534 + ... + 20948410.

It is an arithmetic number, because the mean of its divisors is an integer number (3989704005).

Almost surely, 2^102153505444 is an apocalyptic number.

It is an amenable number.

102153505444 is a deficient number, since it is larger than the sum of its proper divisors (89352286796).

102153505444 is a wasteful number, since it uses less digits than its factorization.

102153505444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448 (or 8446 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 102153505444 its reverse (444505351201), we get a palindrome (546658856645).

The spelling of 102153505444 in words is "one hundred two billion, one hundred fifty-three million, five hundred five thousand, four hundred forty-four".