251050043540422 has 64 divisors (see below), whose sum is σ = 468668483712000. Its totient is φ = 98410142581632.

The previous prime is 251050043540369. The next prime is 251050043540431. The reversal of 251050043540422 is 224045340050152.

It is a super-2 number, since 2×251050043540422² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149177404 + ... + 150850912.

It is an arithmetic number, because the mean of its divisors is an integer number (7322945058000).

Almost surely, 2^{251050043540422} is an apocalyptic number.

251050043540422 is a deficient number, since it is larger than the sum of its proper divisors (217618440171578).

251050043540422 is a wasteful number, since it uses less digits than its factorization.

251050043540422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693013.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 251050043540422 its reverse (224045340050152), we get a palindrome (475095383590574).

The spelling of 251050043540422 in words is "two hundred fifty-one trillion, fifty billion, forty-three million, five hundred forty thousand, four hundred twenty-two".