19477845552 has 40 divisors (see below), whose sum is σ = 54892111680. Its totient is φ = 5902377280.

The previous prime is 19477845539. The next prime is 19477845587. The reversal of 19477845552 is 25554877491.

It is a junction number, because it is equal to n+sod(n) for n = 19477845492 and 19477845501.

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, 18444402 + ... + 18445457.

It is an arithmetic number, because the mean of its divisors is an integer number (1372302792).

Almost surely, 2^19477845552 is an apocalyptic number.

19477845552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19477845552 is an abundant number, since it is smaller than the sum of its proper divisors (35414266128).

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

19477845552 is a wasteful number, since it uses less digits than its factorization.

19477845552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36889881 (or 36889875 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 57.

The spelling of 19477845552 in words is "nineteen billion, four hundred seventy-seven million, eight hundred forty-five thousand, five hundred fifty-two".