9961369758 has 24 divisors (see below), whose sum is σ = 22109383296. Its totient is φ = 3239469600.

The previous prime is 9961369729. The next prime is 9961369763. The reversal of 9961369758 is 8579631699.

9961369758 is a `hidden beast` number, since 9 + 9 + 613 + 6 + 9 + 7 + 5 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 9961369695 and 9961369704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6748158 + ... + 6749633.

It is an arithmetic number, because the mean of its divisors is an integer number (921224304).

Almost surely, 2^9961369758 is an apocalyptic number.

9961369758 is an abundant number, since it is smaller than the sum of its proper divisors (12148013538).

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

9961369758 is a wasteful number, since it uses less digits than its factorization.

9961369758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13497840 (or 13497837 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The square root of 9961369758 is about 99806.6618918797. The cubic root of 9961369758 is about 2151.6568989490.

The spelling of 9961369758 in words is "nine billion, nine hundred sixty-one million, three hundred sixty-nine thousand, seven hundred fifty-eight".