127775632151 has 4 divisors (see below), whose sum is σ = 127776803112. Its totient is φ = 127774461192.

The previous prime is 127775632121. The next prime is 127775632157. The reversal of 127775632151 is 151236577721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151236577721 = 4523 ⋅33437227.

It is a cyclic number.

It is not a de Polignac number, because 127775632151 - 2⁶ = 127775632087 is a prime.

It is a super-2 number, since 2×127775632151² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127775632096 and 127775632105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127775632157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402800 + ... + 646373.

It is an arithmetic number, because the mean of its divisors is an integer number (31944200778).

Almost surely, 2^127775632151 is an apocalyptic number.

127775632151 is a deficient number, since it is larger than the sum of its proper divisors (1170961).

127775632151 is a wasteful number, since it uses less digits than its factorization.

127775632151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170960.

The product of its digits is 617400, while the sum is 47.

The spelling of 127775632151 in words is "one hundred twenty-seven billion, seven hundred seventy-five million, six hundred thirty-two thousand, one hundred fifty-one".