19697502048 has 96 divisors (see below), whose sum is σ = 59211936000. Its totient is φ = 5616483840.

The previous prime is 19697502029. The next prime is 19697502107. The reversal of 19697502048 is 84020579691.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305958 + ... + 364698.

It is an arithmetic number, because the mean of its divisors is an integer number (616791000).

Almost surely, 2^19697502048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19697502048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29605968000).

19697502048 is an abundant number, since it is smaller than the sum of its proper divisors (39514433952).

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

19697502048 is a wasteful number, since it uses less digits than its factorization.

19697502048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59260 (or 59252 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 19697502048 in words is "nineteen billion, six hundred ninety-seven million, five hundred two thousand, forty-eight".