9902177161 has 8 divisors (see below), whose sum is σ = 10436025920. Its totient is φ = 9369596592.

The previous prime is 9902177147. The next prime is 9902177177. The reversal of 9902177161 is 1617712099.

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

It is a cyclic number.

It is not a de Polignac number, because 9902177161 - 2²¹ = 9900080009 is a prime.

It is a super-2 number, since 2×9902177161² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9902177101) 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, 300990 + ... + 332263.

It is an arithmetic number, because the mean of its divisors is an integer number (1304503240).

Almost surely, 2^9902177161 is an apocalyptic number.

It is an amenable number.

9902177161 is a deficient number, since it is larger than the sum of its proper divisors (533848759).

9902177161 is a wasteful number, since it uses less digits than its factorization.

9902177161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634095.

The product of its (nonzero) digits is 47628, while the sum is 43.

The square root of 9902177161 is about 99509.6837548990. The cubic root of 9902177161 is about 2147.3865602969.

The spelling of 9902177161 in words is "nine billion, nine hundred two million, one hundred seventy-seven thousand, one hundred sixty-one".