127715212151 has 4 divisors (see below), whose sum is σ = 128979719304. Its totient is φ = 126450705000.

The previous prime is 127715212147. The next prime is 127715212171. The reversal of 127715212151 is 151212517721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 127715212151 - 2² = 127715212147 is a prime.

It is a super-2 number, since 2×127715212151² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127715212171) 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, 632253425 + ... + 632253626.

It is an arithmetic number, because the mean of its divisors is an integer number (32244929826).

Almost surely, 2^127715212151 is an apocalyptic number.

127715212151 is a deficient number, since it is larger than the sum of its proper divisors (1264507153).

127715212151 is a wasteful number, since it uses less digits than its factorization.

127715212151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264507152.

The product of its digits is 9800, while the sum is 35.

Adding to 127715212151 its reverse (151212517721), we get a palindrome (278927729872).

The spelling of 127715212151 in words is "one hundred twenty-seven billion, seven hundred fifteen million, two hundred twelve thousand, one hundred fifty-one".