19702432891444 has 48 divisors (see below), whose sum is σ = 35725753627200. Its totient is φ = 9496175673600.

The previous prime is 19702432891433. The next prime is 19702432891451. The reversal of 19702432891444 is 44419823420791.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587606872 + ... + 587640400.

It is an arithmetic number, because the mean of its divisors is an integer number (744286533900).

Almost surely, 2^{19702432891444} is an apocalyptic number.

It is an amenable number.

19702432891444 is a deficient number, since it is larger than the sum of its proper divisors (16023320735756).

19702432891444 is a wasteful number, since it uses less digits than its factorization.

19702432891444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41584 (or 41582 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 19702432891444 in words is "nineteen trillion, seven hundred two billion, four hundred thirty-two million, eight hundred ninety-one thousand, four hundred forty-four".