245399454145 has 8 divisors (see below), whose sum is σ = 294599998440. Its totient is φ = 196239127680.

The previous prime is 245399454143. The next prime is 245399454191. The reversal of 245399454145 is 541454993542.

It can be written as a sum of positive squares in 4 ways, for example, as 12101760064 + 233297694081 = 110008^2 + 483009^2 .

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

It is not a de Polignac number, because 245399454145 - 2¹ = 245399454143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245399454143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10041030 + ... + 10065439.

It is an arithmetic number, because the mean of its divisors is an integer number (36824999805).

Almost surely, 2^245399454145 is an apocalyptic number.

It is an amenable number.

245399454145 is a deficient number, since it is larger than the sum of its proper divisors (49200544295).

245399454145 is a wasteful number, since it uses less digits than its factorization.

245399454145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20108915.

The product of its digits is 15552000, while the sum is 55.

The spelling of 245399454145 in words is "two hundred forty-five billion, three hundred ninety-nine million, four hundred fifty-four thousand, one hundred forty-five".