245120321552 has 20 divisors (see below), whose sum is σ = 481426387260. Its totient is φ = 120881253888.

The previous prime is 245120321543. The next prime is 245120321581. The reversal of 245120321552 is 255123021542.

It can be written as a sum of positive squares in 2 ways, for example, as 42850656016 + 202269665536 = 207004^2 + 449744^2 .

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, 104930477 + ... + 104932812.

It is an arithmetic number, because the mean of its divisors is an integer number (24071319363).

Almost surely, 2^245120321552 is an apocalyptic number.

It is an amenable number.

245120321552 is a deficient number, since it is larger than the sum of its proper divisors (236306065708).

245120321552 is a wasteful number, since it uses less digits than its factorization.

245120321552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209863370 (or 209863364 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 245120321552 in words is "two hundred forty-five billion, one hundred twenty million, three hundred twenty-one thousand, five hundred fifty-two".