9961198143 has 8 divisors (see below), whose sum is σ = 14303258928. Its totient is φ = 6129968064.

The previous prime is 9961198141. The next prime is 9961198157. The reversal of 9961198143 is 3418911699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9961198143 - 2¹ = 9961198141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961198141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127707630 + ... + 127707707.

It is an arithmetic number, because the mean of its divisors is an integer number (1787907366).

Almost surely, 2^9961198143 is an apocalyptic number.

9961198143 is a deficient number, since it is larger than the sum of its proper divisors (4342060785).

9961198143 is a wasteful number, since it uses less digits than its factorization.

9961198143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255415353.

The product of its digits is 419904, while the sum is 51.

The square root of 9961198143 is about 99805.8021509772. The cubic root of 9961198143 is about 2151.6445425921.

The spelling of 9961198143 in words is "nine billion, nine hundred sixty-one million, one hundred ninety-eight thousand, one hundred forty-three".