99784736001 has 80 divisors (see below), whose sum is σ = 160128738000. Its totient is φ = 61702705152.

The previous prime is 99784735997. The next prime is 99784736003. The reversal of 99784736001 is 10063748799.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 54464400 + 99730271601 = 7380^2 + 315801^2 .

It is not a de Polignac number, because 99784736001 - 2² = 99784735997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99784736003) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 42769831 + ... + 42772163.

It is an arithmetic number, because the mean of its divisors is an integer number (2001609225).

Almost surely, 2^99784736001 is an apocalyptic number.

It is an amenable number.

99784736001 is a deficient number, since it is larger than the sum of its proper divisors (60344001999).

99784736001 is a wasteful number, since it uses less digits than its factorization.

99784736001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800 (or 2791 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 99784736001 in words is "ninety-nine billion, seven hundred eighty-four million, seven hundred thirty-six thousand, one".