127566527752261 has 32 divisors (see below), whose sum is σ = 143837926227968. Its totient is φ = 112337804517120.

The previous prime is 127566527752259. The next prime is 127566527752283. The reversal of 127566527752261 is 162257725665721.

It is not a de Polignac number, because 127566527752261 - 2¹ = 127566527752259 is a prime.

It is a super-2 number, since 2×127566527752261² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127566527752193 and 127566527752202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127566527752291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97651 + ... + 15973183.

It is an arithmetic number, because the mean of its divisors is an integer number (4494935194624).

Almost surely, 2^{127566527752261} is an apocalyptic number.

It is an amenable number.

127566527752261 is a deficient number, since it is larger than the sum of its proper divisors (16271398475707).

127566527752261 is a wasteful number, since it uses less digits than its factorization.

127566527752261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15875861.

The product of its digits is 148176000, while the sum is 64.

The spelling of 127566527752261 in words is "one hundred twenty-seven trillion, five hundred sixty-six billion, five hundred twenty-seven million, seven hundred fifty-two thousand, two hundred sixty-one".