80109360816656 has 20 divisors (see below), whose sum is σ = 155213548491372. Its totient is φ = 40054251528576.

The previous prime is 80109360816637. The next prime is 80109360816673. The reversal of 80109360816656 is 65661806390108.

It can be written as a sum of positive squares in 2 ways, for example, as 18301147104256 + 61808213712400 = 4277984^2 + 7861820^2 .

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 80109360816595 and 80109360816604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25261295 + ... + 28255118.

Almost surely, 2^{80109360816656} is an apocalyptic number.

It is an amenable number.

80109360816656 is a deficient number, since it is larger than the sum of its proper divisors (75104187674716).

80109360816656 is a wasteful number, since it uses less digits than its factorization.

80109360816656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53609978 (or 53609972 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 80109360816656 in words is "eighty trillion, one hundred nine billion, three hundred sixty million, eight hundred sixteen thousand, six hundred fifty-six".