19173077040 has 120 divisors (see below), whose sum is σ = 64360411920. Its totient is φ = 4719516672.

The previous prime is 19173077029. The next prime is 19173077041. The reversal of 19173077040 is 4077037191.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 19173077040.

It is not an unprimeable number, because it can be changed into a prime (19173077041) 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 23 ways as a sum of consecutive naturals, for example, 195795 + ... + 276914.

It is an arithmetic number, because the mean of its divisors is an integer number (536336766).

Almost surely, 2^19173077040 is an apocalyptic number.

19173077040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19173077040 is an abundant number, since it is smaller than the sum of its proper divisors (45187334880).

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

19173077040 is a wasteful number, since it uses less digits than its factorization.

19173077040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472751 (or 472732 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 39.

The spelling of 19173077040 in words is "nineteen billion, one hundred seventy-three million, seventy-seven thousand, forty".