127582277816 has 16 divisors (see below), whose sum is σ = 273390595440. Its totient is φ = 54678119040.

The previous prime is 127582277789. The next prime is 127582277863. The reversal of 127582277816 is 618772285721.

It is a super-2 number, since 2×127582277816² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 2278254961 = 127582277816 / (1 + 2 + 7 + 5 + 8 + 2 + 2 + 7 + 7 + 8 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139127425 + ... + 1139127536.

It is an arithmetic number, because the mean of its divisors is an integer number (17086912215).

Almost surely, 2^127582277816 is an apocalyptic number.

It is an amenable number.

127582277816 is an abundant number, since it is smaller than the sum of its proper divisors (145808317624).

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

127582277816 is a wasteful number, since it uses less digits than its factorization.

127582277816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278254974 (or 2278254970 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 56.

The spelling of 127582277816 in words is "one hundred twenty-seven billion, five hundred eighty-two million, two hundred seventy-seven thousand, eight hundred sixteen".