19787067580 has 48 divisors (see below), whose sum is σ = 47500217856. Its totient is φ = 6782529600.

The previous prime is 19787067569. The next prime is 19787067581. The reversal of 19787067580 is 8576078791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19787067581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678867 + ... + 707413.

It is an arithmetic number, because the mean of its divisors is an integer number (989587872).

Almost surely, 2^19787067580 is an apocalyptic number.

19787067580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19787067580 is an abundant number, since it is smaller than the sum of its proper divisors (27713150276).

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

19787067580 is a wasteful number, since it uses less digits than its factorization.

19787067580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33514 (or 33512 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 58.

The spelling of 19787067580 in words is "nineteen billion, seven hundred eighty-seven million, sixty-seven thousand, five hundred eighty".