19987751150 has 12 divisors (see below), whose sum is σ = 37177217232. Its totient is φ = 7995100440.

The previous prime is 19987751149. The next prime is 19987751153. The reversal of 19987751150 is 5115778991.

It is a junction number, because it is equal to n+sod(n) for n = 19987751092 and 19987751101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19987751153) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 199877462 + ... + 199877561.

It is an arithmetic number, because the mean of its divisors is an integer number (3098101436).

Almost surely, 2^19987751150 is an apocalyptic number.

19987751150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19987751150 is a deficient number, since it is larger than the sum of its proper divisors (17189466082).

19987751150 is a wasteful number, since it uses less digits than its factorization.

19987751150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399755035 (or 399755030 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 53.

The spelling of 19987751150 in words is "nineteen billion, nine hundred eighty-seven million, seven hundred fifty-one thousand, one hundred fifty".