245120321553 has 8 divisors (see below), whose sum is σ = 326830046400. Its totient is φ = 163412072208.

The previous prime is 245120321543. The next prime is 245120321581. The reversal of 245120321553 is 355123021542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245120321553 - 2⁶ = 245120321489 is a prime.

It is a super-2 number, since 2×245120321553² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245120321533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106143 + ... + 708171.

It is an arithmetic number, because the mean of its divisors is an integer number (40853755800).

Almost surely, 2^245120321553 is an apocalyptic number.

It is an amenable number.

245120321553 is a deficient number, since it is larger than the sum of its proper divisors (81709724847).

245120321553 is a wasteful number, since it uses less digits than its factorization.

245120321553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737751.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 245120321553 in words is "two hundred forty-five billion, one hundred twenty million, three hundred twenty-one thousand, five hundred fifty-three".