19945525050 has 216 divisors, whose sum is σ = 61087423488. Its totient is φ = 4834922400.

The previous prime is 19945525013. The next prime is 19945525069. The reversal of 19945525050 is 5052554991.

19945525050 is a `hidden beast` number, since 1 + 9 + 94 + 5 + 52 + 505 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 19945524987 and 19945525005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1463367 + ... + 1476933.

Almost surely, 2^19945525050 is an apocalyptic number.

19945525050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19945525050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30543711744).

19945525050 is an abundant number, since it is smaller than the sum of its proper divisors (41141898438).

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

19945525050 is a wasteful number, since it uses less digits than its factorization.

19945525050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13616 (or 13588 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 45.

The spelling of 19945525050 in words is "nineteen billion, nine hundred forty-five million, five hundred twenty-five thousand, fifty".