249051220050 has 48 divisors (see below), whose sum is σ = 650154771360. Its totient is φ = 62918202240.

The previous prime is 249051220043. The next prime is 249051220081. The reversal of 249051220050 is 50022150942.

It is a super-3 number, since 3×249051220050³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43690347 + ... + 43696046.

It is an arithmetic number, because the mean of its divisors is an integer number (13544891070).

Almost surely, 2^249051220050 is an apocalyptic number.

249051220050 is an abundant number, since it is smaller than the sum of its proper divisors (401103551310).

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

249051220050 is a wasteful number, since it uses less digits than its factorization.

249051220050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87386427 (or 87386422 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 249051220050 its reverse (50022150942), we get a palindrome (299073370992).

The spelling of 249051220050 in words is "two hundred forty-nine billion, fifty-one million, two hundred twenty thousand, fifty".