245269128945 has 32 divisors (see below), whose sum is σ = 396532594944. Its totient is φ = 129446553600.

The previous prime is 245269128931. The next prime is 245269128961. The reversal of 245269128945 is 549821962542.

It is not a de Polignac number, because 245269128945 - 2¹³ = 245269120753 is a prime.

It is a super-2 number, since 2×245269128945² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 954885 + ... + 1184205.

It is an arithmetic number, because the mean of its divisors is an integer number (12391643592).

Almost surely, 2^245269128945 is an apocalyptic number.

It is an amenable number.

245269128945 is a deficient number, since it is larger than the sum of its proper divisors (151263465999).

245269128945 is a wasteful number, since it uses less digits than its factorization.

245269128945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230073.

The product of its digits is 12441600, while the sum is 57.

The spelling of 245269128945 in words is "two hundred forty-five billion, two hundred sixty-nine million, one hundred twenty-eight thousand, nine hundred forty-five".