19561376102 has 8 divisors (see below), whose sum is σ = 29342875800. Its totient is φ = 9780417504.

The previous prime is 19561376083. The next prime is 19561376143. The reversal of 19561376102 is 20167316591.

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 19561376102.

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 3 ways as a sum of consecutive naturals, for example, 27827 + ... + 199742.

It is an arithmetic number, because the mean of its divisors is an integer number (3667859475).

Almost surely, 2^19561376102 is an apocalyptic number.

19561376102 is a deficient number, since it is larger than the sum of its proper divisors (9781499698).

19561376102 is a wasteful number, since it uses less digits than its factorization.

19561376102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270550.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 19561376102 in words is "nineteen billion, five hundred sixty-one million, three hundred seventy-six thousand, one hundred two".