245231220151 has 16 divisors (see below), whose sum is σ = 254182440960. Its totient is φ = 236347061760.

The previous prime is 245231220139. The next prime is 245231220209. The reversal of 245231220151 is 151022132542.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245231220151 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 (245231220121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7452631 + ... + 7485463.

It is an arithmetic number, because the mean of its divisors is an integer number (15886402560).

Almost surely, 2^245231220151 is an apocalyptic number.

245231220151 is a deficient number, since it is larger than the sum of its proper divisors (8951220809).

245231220151 is a wasteful number, since it uses less digits than its factorization.

245231220151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33846.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 245231220151 its reverse (151022132542), we get a palindrome (396253352693).

The spelling of 245231220151 in words is "two hundred forty-five billion, two hundred thirty-one million, two hundred twenty thousand, one hundred fifty-one".