20127237443554 has 4 divisors (see below), whose sum is σ = 30190856165334. Its totient is φ = 10063618721776.

The previous prime is 20127237443503. The next prime is 20127237443567. The reversal of 20127237443554 is 45534473272102.

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., 20107825430625 + 19412012929 = 4484175^2 + 139327^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20127237443498 and 20127237443507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5031809360887 + ... + 5031809360890.

Almost surely, 2^{20127237443554} is an apocalyptic number.

20127237443554 is a deficient number, since it is larger than the sum of its proper divisors (10063618721780).

20127237443554 is a wasteful number, since it uses less digits than its factorization.

20127237443554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10063618721779.

The product of its (nonzero) digits is 5644800, while the sum is 49.

The spelling of 20127237443554 in words is "twenty trillion, one hundred twenty-seven billion, two hundred thirty-seven million, four hundred forty-three thousand, five hundred fifty-four".