19872059970 has 128 divisors (see below), whose sum is σ = 55696896000. Its totient is φ = 4443892992.

The previous prime is 19872059953. The next prime is 19872059971. The reversal of 19872059970 is 7995027891.

It is a self number, because there is not a number n which added to its sum of digits gives 19872059970.

It is not an unprimeable number, because it can be changed into a prime (19872059971) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2091691 + ... + 2101169.

It is an arithmetic number, because the mean of its divisors is an integer number (435132000).

Almost surely, 2^19872059970 is an apocalyptic number.

19872059970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19872059970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27848448000).

19872059970 is an abundant number, since it is smaller than the sum of its proper divisors (35824836030).

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

19872059970 is a wasteful number, since it uses less digits than its factorization.

19872059970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9712.

The product of its (nonzero) digits is 2857680, while the sum is 57.

The spelling of 19872059970 in words is "nineteen billion, eight hundred seventy-two million, fifty-nine thousand, nine hundred seventy".