245091131845 has 32 divisors (see below), whose sum is σ = 358662631680. Its totient is φ = 157036008960.

The previous prime is 245091131839. The next prime is 245091131893. The reversal of 245091131845 is 548131190542.

It is not a de Polignac number, because 245091131845 - 2⁹ = 245091131333 is a prime.

It is a congruent number.

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, 2475826 + ... + 2572915.

It is an arithmetic number, because the mean of its divisors is an integer number (11208207240).

Almost surely, 2^245091131845 is an apocalyptic number.

It is an amenable number.

245091131845 is a deficient number, since it is larger than the sum of its proper divisors (113571499835).

245091131845 is a wasteful number, since it uses less digits than its factorization.

245091131845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048845.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 245091131845 in words is "two hundred forty-five billion, ninety-one million, one hundred thirty-one thousand, eight hundred forty-five".