9997763493942 has 24 divisors (see below), whose sum is σ = 24756366747216. Its totient is φ = 2856503855376.

The previous prime is 9997763493911. The next prime is 9997763493943. The reversal of 9997763493942 is 2493943677999.

9997763493942 is a `hidden beast` number, since 99 + 97 + 76 + 349 + 39 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997763493943) 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 11 ways as a sum of consecutive naturals, for example, 39673664533 + ... + 39673664784.

It is an arithmetic number, because the mean of its divisors is an integer number (1031515281134).

Almost surely, 2^{9997763493942} is an apocalyptic number.

9997763493942 is an abundant number, since it is smaller than the sum of its proper divisors (14758603253274).

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

9997763493942 is a wasteful number, since it uses less digits than its factorization.

9997763493942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79347329332 (or 79347329329 counting only the distinct ones).

The product of its digits is 4999796928, while the sum is 81.

The spelling of 9997763493942 in words is "nine trillion, nine hundred ninety-seven billion, seven hundred sixty-three million, four hundred ninety-three thousand, nine hundred forty-two".