245360587021 has 4 divisors (see below), whose sum is σ = 267666094944. Its totient is φ = 223055079100.

The previous prime is 245360586967. The next prime is 245360587049. The reversal of 245360587021 is 120785063542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245360587021 - 2¹⁹ = 245360062733 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 (245360587051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11152753945 + ... + 11152753966.

It is an arithmetic number, because the mean of its divisors is an integer number (66916523736).

Almost surely, 2^245360587021 is an apocalyptic number.

It is an amenable number.

245360587021 is a deficient number, since it is larger than the sum of its proper divisors (22305507923).

245360587021 is a wasteful number, since it uses less digits than its factorization.

245360587021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22305507922.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 245360587021 in words is "two hundred forty-five billion, three hundred sixty million, five hundred eighty-seven thousand, twenty-one".