245271972897 has 24 divisors (see below), whose sum is σ = 411756022080. Its totient is φ = 137779895520.

The previous prime is 245271972893. The next prime is 245271973003. The reversal of 245271972897 is 798279172542.

245271972897 is a `hidden beast` number, since 2 + 4 + 527 + 19 + 7 + 2 + 8 + 97 = 666.

It is not a de Polignac number, because 245271972897 - 2² = 245271972893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (245271972893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32989554 + ... + 32996987.

It is an arithmetic number, because the mean of its divisors is an integer number (17156500920).

Almost surely, 2^245271972897 is an apocalyptic number.

It is an amenable number.

245271972897 is a deficient number, since it is larger than the sum of its proper divisors (166484049183).

245271972897 is a wasteful number, since it uses less digits than its factorization.

245271972897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65986613 (or 65986610 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 245271972897 in words is "two hundred forty-five billion, two hundred seventy-one million, nine hundred seventy-two thousand, eight hundred ninety-seven".