245261541601 has 4 divisors (see below), whose sum is σ = 255925086912. Its totient is φ = 234597996292.

The previous prime is 245261541599. The next prime is 245261541611. The reversal of 245261541601 is 106145162542.

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 245261541601 - 2¹ = 245261541599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245261541611) 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 3 ways as a sum of consecutive naturals, for example, 5331772621 + ... + 5331772666.

It is an arithmetic number, because the mean of its divisors is an integer number (63981271728).

Almost surely, 2^245261541601 is an apocalyptic number.

It is an amenable number.

245261541601 is a deficient number, since it is larger than the sum of its proper divisors (10663545311).

245261541601 is a wasteful number, since it uses less digits than its factorization.

245261541601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10663545310.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 245261541601 in words is "two hundred forty-five billion, two hundred sixty-one million, five hundred forty-one thousand, six hundred one".