127297804951 has 4 divisors (see below), whose sum is σ = 130402629504. Its totient is φ = 124192980400.

The previous prime is 127297804937. The next prime is 127297804969. The reversal of 127297804951 is 159408792721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159408792721 = 19 ⋅8389936459.

It is a cyclic number.

It is not a de Polignac number, because 127297804951 - 2²³ = 127289416343 is a prime.

It is a super-2 number, since 2×127297804951² (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 = 127297804892 and 127297804901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127297804351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552412215 + ... + 1552412296.

It is an arithmetic number, because the mean of its divisors is an integer number (32600657376).

Almost surely, 2^127297804951 is an apocalyptic number.

127297804951 is a deficient number, since it is larger than the sum of its proper divisors (3104824553).

127297804951 is an equidigital number, since it uses as much as digits as its factorization.

127297804951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104824552.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 127297804951 in words is "one hundred twenty-seven billion, two hundred ninety-seven million, eight hundred four thousand, nine hundred fifty-one".