19740250056 has 16 divisors (see below), whose sum is σ = 49350625200. Its totient is φ = 6580083344.

The previous prime is 19740249973. The next prime is 19740250067. The reversal of 19740250056 is 65005204791.

It is a junction number, because it is equal to n+sod(n) for n = 19740249996 and 19740250023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411255186 + ... + 411255233.

It is an arithmetic number, because the mean of its divisors is an integer number (3084414075).

Almost surely, 2^19740250056 is an apocalyptic number.

It is an amenable number.

19740250056 is an abundant number, since it is smaller than the sum of its proper divisors (29610375144).

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

19740250056 is a wasteful number, since it uses less digits than its factorization.

19740250056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822510428 (or 822510424 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 19740250056 in words is "nineteen billion, seven hundred forty million, two hundred fifty thousand, fifty-six".