102445403220 has 72 divisors (see below), whose sum is σ = 310789848096. Its totient is φ = 27315364032.

The previous prime is 102445403167. The next prime is 102445403233. The reversal of 102445403220 is 22304544201.

102445403220 is a `hidden beast` number, since 10 + 24 + 4 + 5 + 403 + 220 = 666.

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 23 ways as a sum of consecutive naturals, for example, 1625619 + ... + 1687461.

It is an arithmetic number, because the mean of its divisors is an integer number (4316525668).

Almost surely, 2^102445403220 is an apocalyptic number.

102445403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102445403220 is an abundant number, since it is smaller than the sum of its proper divisors (208344444876).

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

102445403220 is a wasteful number, since it uses less digits than its factorization.

102445403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71061 (or 71056 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 102445403220 its reverse (22304544201), we get a palindrome (124749947421).

The spelling of 102445403220 in words is "one hundred two billion, four hundred forty-five million, four hundred three thousand, two hundred twenty".