19650878080 has 32 divisors (see below), whose sum is σ = 46977881940. Its totient is φ = 7860350976.

The previous prime is 19650878063. The next prime is 19650878099. The reversal of 19650878080 is 8087805691.

It can be written as a sum of positive squares in 2 ways, for example, as 16860503104 + 2790374976 = 129848^2 + 52824^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15351609 + ... + 15352888.

Almost surely, 2^19650878080 is an apocalyptic number.

19650878080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19650878080 is an abundant number, since it is smaller than the sum of its proper divisors (27327003860).

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

19650878080 is an equidigital number, since it uses as much as digits as its factorization.

19650878080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30704516 (or 30704504 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 19650878080 in words is "nineteen billion, six hundred fifty million, eight hundred seventy-eight thousand, eighty".