19880780370 has 48 divisors (see below), whose sum is σ = 52445836800. Its totient is φ = 4819582240.

The previous prime is 19880780329. The next prime is 19880780377. The reversal of 19880780370 is 7308708891.

It is not an unprimeable number, because it can be changed into a prime (19880780377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2734770 + ... + 2742029.

It is an arithmetic number, because the mean of its divisors is an integer number (1092621600).

Almost surely, 2^19880780370 is an apocalyptic number.

19880780370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19880780370 is an abundant number, since it is smaller than the sum of its proper divisors (32565056430).

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

19880780370 is a wasteful number, since it uses less digits than its factorization.

19880780370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476831 (or 5476820 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 19880780370 in words is "nineteen billion, eight hundred eighty million, seven hundred eighty thousand, three hundred seventy".