245799509444 has 6 divisors (see below), whose sum is σ = 430149141534. Its totient is φ = 122899754720.

The previous prime is 245799509401. The next prime is 245799509477. The reversal of 245799509444 is 444905997542.

It can be written as a sum of positive squares in only one way, i.e., 230352002500 + 15447506944 = 479950^2 + 124288^2 .

It is a super-2 number, since 2×245799509444² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30724938677 + ... + 30724938684.

It is an arithmetic number, because the mean of its divisors is an integer number (71691523589).

Almost surely, 2^245799509444 is an apocalyptic number.

It is an amenable number.

245799509444 is a deficient number, since it is larger than the sum of its proper divisors (184349632090).

245799509444 is a wasteful number, since it uses less digits than its factorization.

245799509444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61449877365 (or 61449877363 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 245799509444 in words is "two hundred forty-five billion, seven hundred ninety-nine million, five hundred nine thousand, four hundred forty-four".