19051474428987 has 768 divisors, whose sum is σ = 40326908313600. Its totient is φ = 7708523397120.

The previous prime is 19051474428983. The next prime is 19051474429003. The reversal of 19051474428987 is 78982447415091.

It is not a de Polignac number, because 19051474428987 - 2² = 19051474428983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19051474428983) by changing a digit.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 19380950098 + ... + 19380951080.

It is an arithmetic number, because the mean of its divisors is an integer number (52508995200).

Almost surely, 2^{19051474428987} is an apocalyptic number.

19051474428987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

19051474428987 is an abundant number, since it is smaller than the sum of its proper divisors (21275433884613).

19051474428987 is a wasteful number, since it uses less digits than its factorization.

19051474428987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 69.

The spelling of 19051474428987 in words is "nineteen trillion, fifty-one billion, four hundred seventy-four million, four hundred twenty-eight thousand, nine hundred eighty-seven".