245147231995 has 4 divisors (see below), whose sum is σ = 294176678400. Its totient is φ = 196117785592.

The previous prime is 245147231977. The next prime is 245147232049. The reversal of 245147231995 is 599132741542.

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-245147231995 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24514723195 + ... + 24514723204.

It is an arithmetic number, because the mean of its divisors is an integer number (73544169600).

Almost surely, 2^245147231995 is an apocalyptic number.

245147231995 is a deficient number, since it is larger than the sum of its proper divisors (49029446405).

245147231995 is an equidigital number, since it uses as much as digits as its factorization.

245147231995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49029446404.

The product of its digits is 2721600, while the sum is 52.

The spelling of 245147231995 in words is "two hundred forty-five billion, one hundred forty-seven million, two hundred thirty-one thousand, nine hundred ninety-five".