19800126746 has 64 divisors (see below), whose sum is σ = 34525854720. Its totient is φ = 8453652480.

The previous prime is 19800126721. The next prime is 19800126809. The reversal of 19800126746 is 64762100891.

It is a junction number, because it is equal to n+sod(n) for n = 19800126697 and 19800126706.

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, 1937426 + ... + 1947618.

It is an arithmetic number, because the mean of its divisors is an integer number (539466480).

Almost surely, 2^19800126746 is an apocalyptic number.

19800126746 is a deficient number, since it is larger than the sum of its proper divisors (14725727974).

19800126746 is a wasteful number, since it uses less digits than its factorization.

19800126746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 19800126746 in words is "nineteen billion, eight hundred million, one hundred twenty-six thousand, seven hundred forty-six".