2251242536424 has 128 divisors (see below), whose sum is σ = 6539456117760. Its totient is φ = 632512032768.

The previous prime is 2251242536423. The next prime is 2251242536467. The reversal of 2251242536424 is 4246352421522.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2251242536423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6321399 + ... + 6668025.

It is an arithmetic number, because the mean of its divisors is an integer number (51089500920).

Almost surely, 2^{2251242536424} is an apocalyptic number.

2251242536424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2251242536424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3269728058880).

2251242536424 is an abundant number, since it is smaller than the sum of its proper divisors (4288213581336).

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

2251242536424 is a wasteful number, since it uses less digits than its factorization.

2251242536424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347287 (or 347283 counting only the distinct ones).

The product of its digits is 921600, while the sum is 42.

Adding to 2251242536424 its reverse (4246352421522), we get a palindrome (6497594957946).

The spelling of 2251242536424 in words is "two trillion, two hundred fifty-one billion, two hundred forty-two million, five hundred thirty-six thousand, four hundred twenty-four".