19552649064 has 32 divisors (see below), whose sum is σ = 52641748320. Its totient is φ = 6016199616.

The previous prime is 19552649047. The next prime is 19552649069. The reversal of 19552649064 is 46094625591.

It is a junction number, because it is equal to n+sod(n) for n = 19552648998 and 19552649016.

It is not an unprimeable number, because it can be changed into a prime (19552649069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31334062 + ... + 31334685.

It is an arithmetic number, because the mean of its divisors is an integer number (1645054635).

Almost surely, 2^19552649064 is an apocalyptic number.

It is an amenable number.

19552649064 is an abundant number, since it is smaller than the sum of its proper divisors (33089099256).

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

19552649064 is a wasteful number, since it uses less digits than its factorization.

19552649064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62668769 (or 62668765 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 19552649064 in words is "nineteen billion, five hundred fifty-two million, six hundred forty-nine thousand, sixty-four".