80618210706781 has 16 divisors (see below), whose sum is σ = 91773183006720. Its totient is φ = 70101069041520.

The previous prime is 80618210706767. The next prime is 80618210706871. The reversal of 80618210706781 is 18760701281608.

It is not a de Polignac number, because 80618210706781 - 2¹³ = 80618210698589 is a prime.

It is a super-2 number, since 2×80618210706781² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80618210701781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6453280 + ... + 14243638.

It is an arithmetic number, because the mean of its divisors is an integer number (5735823937920).

Almost surely, 2^{80618210706781} is an apocalyptic number.

It is an amenable number.

80618210706781 is a deficient number, since it is larger than the sum of its proper divisors (11154972299939).

80618210706781 is a wasteful number, since it uses less digits than its factorization.

80618210706781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7831296.

The product of its (nonzero) digits is 1806336, while the sum is 55.

The spelling of 80618210706781 in words is "eighty trillion, six hundred eighteen billion, two hundred ten million, seven hundred six thousand, seven hundred eighty-one".