245436355540 has 24 divisors (see below), whose sum is σ = 521207545320. Its totient is φ = 97071456768.

The previous prime is 245436355523. The next prime is 245436355559. The reversal of 245436355540 is 45553634542.

It can be written as a sum of positive squares in 4 ways, for example, as 50499977284 + 194936378256 = 224722^2 + 441516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68941017 + ... + 68944576.

It is an arithmetic number, because the mean of its divisors is an integer number (21716981055).

Almost surely, 2^245436355540 is an apocalyptic number.

245436355540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245436355540 is an abundant number, since it is smaller than the sum of its proper divisors (275771189780).

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

245436355540 is a wasteful number, since it uses less digits than its factorization.

245436355540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137885691 (or 137885689 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 46.

The spelling of 245436355540 in words is "two hundred forty-five billion, four hundred thirty-six million, three hundred fifty-five thousand, five hundred forty".