245478974445 has 24 divisors (see below), whose sum is σ = 439222597632. Its totient is φ = 126698824800.

The previous prime is 245478974443. The next prime is 245478974459. The reversal of 245478974445 is 544479874542.

245478974445 is a `hidden beast` number, since 2 + 4 + 5 + 47 + 89 + 74 + 445 = 666.

It is not a de Polignac number, because 245478974445 - 2¹ = 245478974443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245478974443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87983901 + ... + 87986690.

It is an arithmetic number, because the mean of its divisors is an integer number (18300941568).

Almost surely, 2^245478974445 is an apocalyptic number.

It is an amenable number.

245478974445 is a deficient number, since it is larger than the sum of its proper divisors (193743623187).

245478974445 is a wasteful number, since it uses less digits than its factorization.

245478974445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175970633 (or 175970630 counting only the distinct ones).

The product of its digits is 180633600, while the sum is 63.

The spelling of 245478974445 in words is "two hundred forty-five billion, four hundred seventy-eight million, nine hundred seventy-four thousand, four hundred forty-five".