245343315535540 has 48 divisors (see below), whose sum is σ = 518631091182288. Its totient is φ = 97489918116864.

The previous prime is 245343315535531. The next prime is 245343315535639. The reversal of 245343315535540 is 45535513343542.

It can be written as a sum of positive squares in 8 ways, for example, as 52126031866896 + 193217283668644 = 7219836^2 + 13900262^2 .

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, 65046747 + ... + 68715106.

It is an arithmetic number, because the mean of its divisors is an integer number (10804814399631).

Almost surely, 2^{245343315535540} is an apocalyptic number.

245343315535540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245343315535540 is an abundant number, since it is smaller than the sum of its proper divisors (273287775646748).

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

245343315535540 is a wasteful number, since it uses less digits than its factorization.

245343315535540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133762468 (or 133762466 counting only the distinct ones).

The product of its (nonzero) digits is 32400000, while the sum is 52.

The spelling of 245343315535540 in words is "two hundred forty-five trillion, three hundred forty-three billion, three hundred fifteen million, five hundred thirty-five thousand, five hundred forty".