22751001556442 has 4 divisors (see below), whose sum is σ = 34126502334666. Its totient is φ = 11375500778220.

The previous prime is 22751001556351. The next prime is 22751001556489. The reversal of 22751001556442 is 24465510015722.

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

It can be written as a sum of positive squares in only one way, i.e., 16168754639521 + 6582246916921 = 4021039^2 + 2565589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22751001556393 and 22751001556402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5687750389109 + ... + 5687750389112.

Almost surely, 2^{22751001556442} is an apocalyptic number.

22751001556442 is a deficient number, since it is larger than the sum of its proper divisors (11375500778224).

22751001556442 is a wasteful number, since it uses less digits than its factorization.

22751001556442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11375500778223.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 22751001556442 in words is "twenty-two trillion, seven hundred fifty-one billion, one million, five hundred fifty-six thousand, four hundred forty-two".