245428539520 has 32 divisors (see below), whose sum is σ = 586727603820. Its totient is φ = 98171415552.

The previous prime is 245428539481. The next prime is 245428539607. The reversal of 245428539520 is 25935824542.

It can be written as a sum of positive squares in 2 ways, for example, as 244644987456 + 783552064 = 494616^2 + 27992^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 191740407 + ... + 191741686.

Almost surely, 2^245428539520 is an apocalyptic number.

245428539520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245428539520 is an abundant number, since it is smaller than the sum of its proper divisors (341299064300).

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

245428539520 is an equidigital number, since it uses as much as digits as its factorization.

245428539520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383482112 (or 383482100 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 245428539520 in words is "two hundred forty-five billion, four hundred twenty-eight million, five hundred thirty-nine thousand, five hundred twenty".