19120840057 has 32 divisors (see below), whose sum is σ = 23075205120. Its totient is φ = 15649744320.

The previous prime is 19120840043. The next prime is 19120840069. The reversal of 19120840057 is 75004802191.

It is a cyclic number.

It is not a de Polignac number, because 19120840057 - 2³¹ = 16973356409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 19120839998 and 19120840025.

It is not an unprimeable number, because it can be changed into a prime (19120843057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303768 + ... + 361270.

It is an arithmetic number, because the mean of its divisors is an integer number (721100160).

Almost surely, 2^19120840057 is an apocalyptic number.

It is an amenable number.

19120840057 is a deficient number, since it is larger than the sum of its proper divisors (3954365063).

19120840057 is a wasteful number, since it uses less digits than its factorization.

19120840057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57613.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 19120840057 in words is "nineteen billion, one hundred twenty million, eight hundred forty thousand, fifty-seven".