80081720830 has 32 divisors (see below), whose sum is σ = 146002500000. Its totient is φ = 31621005312.

The previous prime is 80081720801. The next prime is 80081720861. The reversal of 80081720830 is 3802718008.

It is a super-2 number, since 2×80081720830² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80081720830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998046 + ... + 1075294.

It is an arithmetic number, because the mean of its divisors is an integer number (4562578125).

Almost surely, 2^80081720830 is an apocalyptic number.

80081720830 is a deficient number, since it is larger than the sum of its proper divisors (65920779170).

80081720830 is a wasteful number, since it uses less digits than its factorization.

80081720830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78588.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 80081720830 in words is "eighty billion, eighty-one million, seven hundred twenty thousand, eight hundred thirty".