245121052191 has 32 divisors (see below), whose sum is σ = 350536780800. Its totient is φ = 151809914880.

The previous prime is 245121052181. The next prime is 245121052201. The reversal of 245121052191 is 191250121542.

It is an interprime number because it is at equal distance from previous prime (245121052181) and next prime (245121052201).

It is not a de Polignac number, because 245121052191 - 2¹⁰ = 245121051167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245121052181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18369600 + ... + 18382938.

It is an arithmetic number, because the mean of its divisors is an integer number (10954274400).

Almost surely, 2^245121052191 is an apocalyptic number.

245121052191 is a deficient number, since it is larger than the sum of its proper divisors (105415728609).

245121052191 is a wasteful number, since it uses less digits than its factorization.

245121052191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17999.

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 245121052191 in words is "two hundred forty-five billion, one hundred twenty-one million, fifty-two thousand, one hundred ninety-one".