19877669632 has 36 divisors (see below), whose sum is σ = 39689819680. Its totient is φ = 9935797248.

The previous prime is 19877669593. The next prime is 19877669683. The reversal of 19877669632 is 23696677891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 993358 + ... + 1013170.

Almost surely, 2^19877669632 is an apocalyptic number.

It is an amenable number.

19877669632 is a deficient number, since it is larger than the sum of its proper divisors (19812150048).

19877669632 is an equidigital number, since it uses as much as digits as its factorization.

19877669632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23748 (or 23734 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 64.

The spelling of 19877669632 in words is "nineteen billion, eight hundred seventy-seven million, six hundred sixty-nine thousand, six hundred thirty-two".