127291216555 has 16 divisors (see below), whose sum is σ = 160607131200. Its totient is φ = 96709656960.

The previous prime is 127291216541. The next prime is 127291216601. The reversal of 127291216555 is 555612192721.

It is not a de Polignac number, because 127291216555 - 2⁹ = 127291216043 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, 7186815 + ... + 7204504.

It is an arithmetic number, because the mean of its divisors is an integer number (10037945700).

Almost surely, 2^127291216555 is an apocalyptic number.

127291216555 is a deficient number, since it is larger than the sum of its proper divisors (33315914645).

127291216555 is a wasteful number, since it uses less digits than its factorization.

127291216555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14391414.

The product of its digits is 378000, while the sum is 46.

The spelling of 127291216555 in words is "one hundred twenty-seven billion, two hundred ninety-one million, two hundred sixteen thousand, five hundred fifty-five".