251441968050 has 144 divisors (see below), whose sum is σ = 831434909760. Its totient is φ = 53051483520.

The previous prime is 251441968031. The next prime is 251441968061. The reversal of 251441968050 is 50869144152.

251441968050 is a `hidden beast` number, since 2 + 514 + 4 + 1 + 9 + 6 + 80 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 251441967987 and 251441968005.

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, 3029160 + ... + 3111059.

It is an arithmetic number, because the mean of its divisors is an integer number (5773853540).

Almost surely, 2^251441968050 is an apocalyptic number.

251441968050 is an abundant number, since it is smaller than the sum of its proper divisors (579992941710).

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

251441968050 is a wasteful number, since it uses less digits than its factorization.

251441968050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6140257 (or 6140249 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 251441968050 in words is "two hundred fifty-one billion, four hundred forty-one million, nine hundred sixty-eight thousand, fifty".