19216550870 has 48 divisors (see below), whose sum is σ = 38049374160. Its totient is φ = 6982472640.

The previous prime is 19216550869. The next prime is 19216550891. The reversal of 19216550870 is 7805561291.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1789076 + ... + 1799784.

It is an arithmetic number, because the mean of its divisors is an integer number (792695295).

Almost surely, 2^19216550870 is an apocalyptic number.

19216550870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19216550870 is a deficient number, since it is larger than the sum of its proper divisors (18832823290).

19216550870 is a wasteful number, since it uses less digits than its factorization.

19216550870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12221 (or 12210 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 19216550870 in words is "nineteen billion, two hundred sixteen million, five hundred fifty thousand, eight hundred seventy".