249415724648 has 8 divisors (see below), whose sum is σ = 467654483730. Its totient is φ = 124707862320.

The previous prime is 249415724629. The next prime is 249415724681. The reversal of 249415724648 is 846427514942.

249415724648 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 216394293124 + 33021431524 = 465182^2 + 181718^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 249415724593 and 249415724602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15588482783 + ... + 15588482798.

Almost surely, 2^249415724648 is an apocalyptic number.

It is an amenable number.

249415724648 is a deficient number, since it is larger than the sum of its proper divisors (218238759082).

249415724648 is a wasteful number, since it uses less digits than its factorization.

249415724648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31176965587 (or 31176965583 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 56.

The spelling of 249415724648 in words is "two hundred forty-nine billion, four hundred fifteen million, seven hundred twenty-four thousand, six hundred forty-eight".