80777552555545 has 16 divisors (see below), whose sum is σ = 101826386668800. Its totient is φ = 61397539787584.

The previous prime is 80777552555509. The next prime is 80777552555603. The reversal of 80777552555545 is 54555525577708.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80777552555545 is a prime.

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, 2357075149 + ... + 2357109418.

It is an arithmetic number, because the mean of its divisors is an integer number (6364149166800).

Almost surely, 2^{80777552555545} is an apocalyptic number.

It is an amenable number.

80777552555545 is a deficient number, since it is larger than the sum of its proper divisors (21048834113255).

80777552555545 is a wasteful number, since it uses less digits than its factorization.

80777552555545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714184744.

The product of its (nonzero) digits is 1715000000, while the sum is 70.

The spelling of 80777552555545 in words is "eighty trillion, seven hundred seventy-seven billion, five hundred fifty-two million, five hundred fifty-five thousand, five hundred forty-five".