19775080420 has 24 divisors (see below), whose sum is σ = 42867272448. Its totient is φ = 7654869600.

The previous prime is 19775080417. The next prime is 19775080439. The reversal of 19775080420 is 2408057791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15947026 + ... + 15948265.

It is an arithmetic number, because the mean of its divisors is an integer number (1786136352).

Almost surely, 2^19775080420 is an apocalyptic number.

19775080420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19775080420 is an abundant number, since it is smaller than the sum of its proper divisors (23092192028).

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

19775080420 is a wasteful number, since it uses less digits than its factorization.

19775080420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31895331 (or 31895329 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 19775080420 in words is "nineteen billion, seven hundred seventy-five million, eighty thousand, four hundred twenty".