127498898154681 has 27 divisors (see below), whose sum is σ = 184379000559663. Its totient is φ = 84900645117360.

The previous prime is 127498898154671. The next prime is 127498898154697. The reversal of 127498898154681 is 186451898894721.

The square root of 127498898154681 is 11291541.

It is a perfect power (a square), and thus also a powerful number.

127498898154681 is a `hidden beast` number, since 1 + 2 + 7 + 498 + 8 + 9 + 8 + 1 + 5 + 46 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 116931587607081 + 10567310547600 = 10813491^2 + 3250740^2 .

It is not a de Polignac number, because 127498898154681 - 2³⁷ = 127361459201209 is a prime.

It is a super-2 number, since 2×127498898154681² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 127498898154681.

It is not an unprimeable number, because it can be changed into a prime (127498898154671) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 40005928170 + ... + 40005931356.

Almost surely, 2^{127498898154681} is an apocalyptic number.

127498898154681 is the 11291541-st square number.

127498898154681 is the 5645771-st centered octagonal number.

It is an amenable number.

127498898154681 is a deficient number, since it is larger than the sum of its proper divisors (56880102404982).

127498898154681 is an frugal number, since it uses more digits than its factorization.

127498898154681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8742 (or 4371 counting only the distinct ones).

The product of its digits is 2229534720, while the sum is 81.

The spelling of 127498898154681 in words is "one hundred twenty-seven trillion, four hundred ninety-eight billion, eight hundred ninety-eight million, one hundred fifty-four thousand, six hundred eighty-one".