10199988787840 has 64 divisors (see below), whose sum is σ = 24385470633000. Its totient is φ = 4079807709184.

The previous prime is 10199988787829. The next prime is 10199988787883. The reversal of 10199988787840 is 4878788999101.

It can be written as a sum of positive squares in 4 ways, for example, as 9442935660096 + 757053127744 = 3072936^2 + 870088^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13986156 + ... + 14697364.

Almost surely, 2^{10199988787840} is an apocalyptic number.

10199988787840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10199988787840 is an abundant number, since it is smaller than the sum of its proper divisors (14185481845160).

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

10199988787840 is an equidigital number, since it uses as much as digits as its factorization.

10199988787840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733637 (or 733625 counting only the distinct ones).

The product of its (nonzero) digits is 585252864, while the sum is 79.

The spelling of 10199988787840 in words is "ten trillion, one hundred ninety-nine billion, nine hundred eighty-eight million, seven hundred eighty-seven thousand, eight hundred forty".