80115621237289 has 15 divisors (see below), whose sum is σ = 88127827511815. Its totient is φ = 72831398362360.

The previous prime is 80115621237271. The next prime is 80115621237299. The reversal of 80115621237289 is 98273212651108.

The square root of 80115621237289 is 8950733.

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., 58692683043225 + 21422938194064 = 7661115^2 + 4628492^2 .

It is not a de Polignac number, because 80115621237289 - 2⁵ = 80115621237257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80115621237229) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1083001707 + ... + 1083075679.

Almost surely, 2^{80115621237289} is an apocalyptic number.

80115621237289 is the 8950733-rd square number.

80115621237289 is the 4475367-th centered octagonal number.

It is an amenable number.

80115621237289 is a deficient number, since it is larger than the sum of its proper divisors (8012206274526).

80115621237289 is an frugal number, since it uses more digits than its factorization.

80115621237289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147990 (or 73984 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 80115621237289 in words is "eighty trillion, one hundred fifteen billion, six hundred twenty-one million, two hundred thirty-seven thousand, two hundred eighty-nine".