19740250057 has 8 divisors (see below), whose sum is σ = 21807411840. Its totient is φ = 17718520560.

The previous prime is 19740249973. The next prime is 19740250067. The reversal of 19740250057 is 75005204791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19740250057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19740250067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11357158 + ... + 11358895.

It is an arithmetic number, because the mean of its divisors is an integer number (2725926480).

Almost surely, 2^19740250057 is an apocalyptic number.

It is an amenable number.

19740250057 is a deficient number, since it is larger than the sum of its proper divisors (2067161783).

19740250057 is a wasteful number, since it uses less digits than its factorization.

19740250057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22716143.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 19740250057 in words is "nineteen billion, seven hundred forty million, two hundred fifty thousand, fifty-seven".