19551638014 has 16 divisors (see below), whose sum is σ = 30946419360. Its totient is φ = 9245716480.

The previous prime is 19551637981. The next prime is 19551638131. The reversal of 19551638014 is 41083615591.

It is a congruent number.

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, 2383747 + ... + 2391934.

It is an arithmetic number, because the mean of its divisors is an integer number (1934151210).

Almost surely, 2^19551638014 is an apocalyptic number.

19551638014 is a deficient number, since it is larger than the sum of its proper divisors (11394781346).

19551638014 is a wasteful number, since it uses less digits than its factorization.

19551638014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775795.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 19551638014 in words is "nineteen billion, five hundred fifty-one million, six hundred thirty-eight thousand, fourteen".