251869799422 has 4 divisors (see below), whose sum is σ = 377804699136. Its totient is φ = 125934899710.

The previous prime is 251869799381. The next prime is 251869799431. The reversal of 251869799422 is 224997968152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62967449854 + ... + 62967449857.

It is an arithmetic number, because the mean of its divisors is an integer number (94451174784).

Almost surely, 2^251869799422 is an apocalyptic number.

251869799422 is a deficient number, since it is larger than the sum of its proper divisors (125934899714).

251869799422 is a wasteful number, since it uses less digits than its factorization.

251869799422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125934899713.

The product of its digits is 39191040, while the sum is 64.

The spelling of 251869799422 in words is "two hundred fifty-one billion, eight hundred sixty-nine million, seven hundred ninety-nine thousand, four hundred twenty-two".