9799976251728 has 60 divisors (see below), whose sum is σ = 29536039542100. Its totient is φ = 3015377307648.

The previous prime is 9799976251721. The next prime is 9799976251781. The reversal of 9799976251728 is 8271526799979.

9799976251728 is a `hidden beast` number, since 9 + 7 + 9 + 9 + 9 + 76 + 2 + 517 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4184839393344 + 5615136858384 = 2045688^2 + 2369628^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9799976251721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2617513153 + ... + 2617516896.

Almost surely, 2^{9799976251728} is an apocalyptic number.

It is an amenable number.

9799976251728 is an abundant number, since it is smaller than the sum of its proper divisors (19736063290372).

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

9799976251728 is a wasteful number, since it uses less digits than its factorization.

9799976251728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235030076 (or 5235030067 counting only the distinct ones).

The product of its digits is 2160406080, while the sum is 81.

The spelling of 9799976251728 in words is "nine trillion, seven hundred ninety-nine billion, nine hundred seventy-six million, two hundred fifty-one thousand, seven hundred twenty-eight".