80309702655 has 192 divisors, whose sum is σ = 173671680000. Its totient is φ = 33428837376.

The previous prime is 80309702647. The next prime is 80309702689. The reversal of 80309702655 is 55620790308.

It is a happy number.

80309702655 is a `hidden beast` number, since 80 + 309 + 7 + 0 + 265 + 5 = 666.

It is not a de Polignac number, because 80309702655 - 2³ = 80309702647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80309702655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 113271441 + ... + 113272149.

It is an arithmetic number, because the mean of its divisors is an integer number (904540000).

Almost surely, 2^80309702655 is an apocalyptic number.

80309702655 is an abundant number, since it is smaller than the sum of its proper divisors (93361977345).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80309702655 is a wasteful number, since it uses less digits than its factorization.

80309702655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 80309702655 in words is "eighty billion, three hundred nine million, seven hundred two thousand, six hundred fifty-five".