245379539171 has 4 divisors (see below), whose sum is σ = 264254888352. Its totient is φ = 226504189992.

The previous prime is 245379539081. The next prime is 245379539177. The reversal of 245379539171 is 171935973542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245379539171 is a prime.

It is a super-2 number, since 2×245379539171² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245379539177) 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, 9437674571 + ... + 9437674596.

It is an arithmetic number, because the mean of its divisors is an integer number (66063722088).

Almost surely, 2^245379539171 is an apocalyptic number.

245379539171 is a deficient number, since it is larger than the sum of its proper divisors (18875349181).

245379539171 is a wasteful number, since it uses less digits than its factorization.

245379539171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18875349180.

The product of its digits is 7144200, while the sum is 56.

The spelling of 245379539171 in words is "two hundred forty-five billion, three hundred seventy-nine million, five hundred thirty-nine thousand, one hundred seventy-one".