249154213050 has 144 divisors (see below), whose sum is σ = 689696924280. Its totient is φ = 64437534720.

The previous prime is 249154213039. The next prime is 249154213073. The reversal of 249154213050 is 50312451942.

249154213050 is a `hidden beast` number, since 24 + 91 + 542 + 1 + 3 + 0 + 5 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 5354287929 + 243799925121 = 73173^2 + 493761^2 .

It is a junction number, because it is equal to n+sod(n) for n = 249154212996 and 249154213014.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5187546 + ... + 5235354.

Almost surely, 2^249154213050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249154213050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344848462140).

249154213050 is an abundant number, since it is smaller than the sum of its proper divisors (440542711230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249154213050 is a wasteful number, since it uses less digits than its factorization.

249154213050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48177 (or 48169 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 249154213050 its reverse (50312451942), we get a palindrome (299466664992).

The spelling of 249154213050 in words is "two hundred forty-nine billion, one hundred fifty-four million, two hundred thirteen thousand, fifty".