19961075626678 has 8 divisors (see below), whose sum is σ = 29976714982368. Its totient is φ = 9968837299224.

The previous prime is 19961075626673. The next prime is 19961075626693. The reversal of 19961075626678 is 87662657016991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19961075626678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19961075626673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5850254926 + ... + 5850258337.

It is an arithmetic number, because the mean of its divisors is an integer number (3747089372796).

Almost surely, 2^{19961075626678} is an apocalyptic number.

19961075626678 is a deficient number, since it is larger than the sum of its proper divisors (10015639355690).

19961075626678 is a wasteful number, since it uses less digits than its factorization.

19961075626678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11700514118.

The product of its (nonzero) digits is 411505920, while the sum is 73.

The spelling of 19961075626678 in words is "nineteen trillion, nine hundred sixty-one billion, seventy-five million, six hundred twenty-six thousand, six hundred seventy-eight".