19740250055 has 32 divisors (see below), whose sum is σ = 24088192128. Its totient is φ = 15528844800.

The previous prime is 19740249973. The next prime is 19740250067. The reversal of 19740250055 is 55005204791.

It is a happy number.

It is not a de Polignac number, because 19740250055 - 2⁸ = 19740249799 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 46888745 + ... + 46889165.

It is an arithmetic number, because the mean of its divisors is an integer number (752756004).

Almost surely, 2^19740250055 is an apocalyptic number.

19740250055 is a deficient number, since it is larger than the sum of its proper divisors (4347942073).

19740250055 is a wasteful number, since it uses less digits than its factorization.

19740250055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 19740250055 in words is "nineteen billion, seven hundred forty million, two hundred fifty thousand, fifty-five".