19900759700 has 18 divisors (see below), whose sum is σ = 43184648766. Its totient is φ = 7960303840.

The previous prime is 19900759631. The next prime is 19900759709. The reversal of 19900759700 is 795700991.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3400336 + 19897359364 = 1844^2 + 141058^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19900759709) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 99503699 + ... + 99503898.

Almost surely, 2^19900759700 is an apocalyptic number.

19900759700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19900759700 is an abundant number, since it is smaller than the sum of its proper divisors (23283889066).

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

19900759700 is a wasteful number, since it uses less digits than its factorization.

19900759700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199007611 (or 199007604 counting only the distinct ones).

The product of its (nonzero) digits is 178605, while the sum is 47.

The spelling of 19900759700 in words is "nineteen billion, nine hundred million, seven hundred fifty-nine thousand, seven hundred".