245447172102 has 64 divisors (see below), whose sum is σ = 537634234368. Its totient is φ = 74084868000.

The previous prime is 245447172101. The next prime is 245447172109. The reversal of 245447172102 is 201271744542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245447172101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26887863 + ... + 26896989.

It is an arithmetic number, because the mean of its divisors is an integer number (8400534912).

Almost surely, 2^245447172102 is an apocalyptic number.

245447172102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

245447172102 is an abundant number, since it is smaller than the sum of its proper divisors (292187062266).

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

245447172102 is a wasteful number, since it uses less digits than its factorization.

245447172102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10705.

The product of its (nonzero) digits is 125440, while the sum is 39.

The spelling of 245447172102 in words is "two hundred forty-five billion, four hundred forty-seven million, one hundred seventy-two thousand, one hundred two".