8073616470921 has 9 divisors (see below), whose sum is σ = 11661902770791. Its totient is φ = 5382405297792.

The previous prime is 8073616470889. The next prime is 8073616470937. The reversal of 8073616470921 is 1290746163708.

The square root of 8073616470921 is 2841411.

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

8073616470921 is a `hidden beast` number, since 8 + 0 + 73 + 6 + 16 + 470 + 92 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3611957265225 + 4461659205696 = 1900515^2 + 2112264^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 8073616470921 - 2⁵ = 8073616470889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8073616474921) 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, 8050665 + ... + 8997801.

Almost surely, 2^{8073616470921} is an apocalyptic number.

8073616470921 is the 2841411-st square number.

8073616470921 is the 1420706-th centered octagonal number.

It is an amenable number.

8073616470921 is a deficient number, since it is larger than the sum of its proper divisors (3588286299870).

8073616470921 is an frugal number, since it uses more digits than its factorization.

8073616470921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894280 (or 947140 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 8073616470921 in words is "eight trillion, seventy-three billion, six hundred sixteen million, four hundred seventy thousand, nine hundred twenty-one".