245400404121440 has 24 divisors (see below), whose sum is σ = 579758454737280. Its totient is φ = 98160161648512.

The previous prime is 245400404121391. The next prime is 245400404121473. The reversal of 245400404121440 is 44121404004542.

It is a super-2 number, since 2×245400404121440² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245400404121440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766876262720 + ... + 766876263039.

It is an arithmetic number, because the mean of its divisors is an integer number (24156602280720).

Almost surely, 2^{245400404121440} is an apocalyptic number.

245400404121440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245400404121440 is an abundant number, since it is smaller than the sum of its proper divisors (334358050615840).

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

245400404121440 is a wasteful number, since it uses less digits than its factorization.

245400404121440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533752525774 (or 1533752525766 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 35.

Adding to 245400404121440 its reverse (44121404004542), we get a palindrome (289521808125982).

The spelling of 245400404121440 in words is "two hundred forty-five trillion, four hundred billion, four hundred four million, one hundred twenty-one thousand, four hundred forty".