245205121534320 has 80 divisors (see below), whose sum is σ = 765684313915680. Its totient is φ = 64910747492352.

The previous prime is 245205121534319. The next prime is 245205121534343. The reversal of 245205121534320 is 23435121502542.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3728755465 + ... + 3728821224.

It is an arithmetic number, because the mean of its divisors is an integer number (9571053923946).

Almost surely, 2^{245205121534320} is an apocalyptic number.

245205121534320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245205121534320 is an abundant number, since it is smaller than the sum of its proper divisors (520479192381360).

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

245205121534320 is a wasteful number, since it uses less digits than its factorization.

245205121534320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7457576842 (or 7457576836 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 245205121534320 in words is "two hundred forty-five trillion, two hundred five billion, one hundred twenty-one million, five hundred thirty-four thousand, three hundred twenty".