8432699095921 has 9 divisors (see below), whose sum is σ = 8815348837771. Its totient is φ = 8065996118752.

The previous prime is 8432699095897. The next prime is 8432699096027. The reversal of 8432699095921 is 1295909962348.

The square root of 8432699095921 is 2903911.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6449288807025 + 1983410288896 = 2539545^2 + 1408336^2 .

It is not a de Polignac number, because 8432699095921 - 2²¹ = 8432696998769 is a prime.

It is a super-2 number, since 2×8432699095921² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8432699095421) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 66726825 + ... + 66853081.

Almost surely, 2^{8432699095921} is an apocalyptic number.

8432699095921 is the 2903911-st square number.

8432699095921 is the 1451956-th centered octagonal number.

It is an amenable number.

8432699095921 is a deficient number, since it is larger than the sum of its proper divisors (382649741850).

8432699095921 is an frugal number, since it uses more digits than its factorization.

8432699095921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252560 (or 126280 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 67.

The spelling of 8432699095921 in words is "eight trillion, four hundred thirty-two billion, six hundred ninety-nine million, ninety-five thousand, nine hundred twenty-one".