102444533020 has 24 divisors (see below), whose sum is σ = 215970625584. Its totient is φ = 40818364416.

The previous prime is 102444533011. The next prime is 102444533057. The reversal of 102444533020 is 20335444201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102444533020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9960282 + ... + 9970561.

It is an arithmetic number, because the mean of its divisors is an integer number (8998776066).

Almost surely, 2^102444533020 is an apocalyptic number.

102444533020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102444533020 is an abundant number, since it is smaller than the sum of its proper divisors (113526092564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102444533020 is a wasteful number, since it uses less digits than its factorization.

102444533020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19931109 (or 19931107 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 102444533020 its reverse (20335444201), we get a palindrome (122779977221).

The spelling of 102444533020 in words is "one hundred two billion, four hundred forty-four million, five hundred thirty-three thousand, twenty".