245120321551 has 8 divisors (see below), whose sum is σ = 280161331200. Its totient is φ = 210085267128.

The previous prime is 245120321543. The next prime is 245120321581. The reversal of 245120321551 is 155123021542.

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

It is a cyclic number.

It is not a de Polignac number, because 245120321551 - 2³ = 245120321543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245120321581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400251 + ... + 1565548.

It is an arithmetic number, because the mean of its divisors is an integer number (35020166400).

Almost surely, 2^245120321551 is an apocalyptic number.

245120321551 is a deficient number, since it is larger than the sum of its proper divisors (35041009649).

245120321551 is a wasteful number, since it uses less digits than its factorization.

245120321551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977613.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 245120321551 in words is "two hundred forty-five billion, one hundred twenty million, three hundred twenty-one thousand, five hundred fifty-one".