127394551587 has 4 divisors (see below), whose sum is σ = 169859402120. Its totient is φ = 84929701056.

The previous prime is 127394551579. The next prime is 127394551591. The reversal of 127394551587 is 785155493721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785155493721 = 3 ⋅261718497907.

It is not a de Polignac number, because 127394551587 - 2³ = 127394551579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127394551597) 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, 21232425262 + ... + 21232425267.

It is an arithmetic number, because the mean of its divisors is an integer number (42464850530).

Almost surely, 2^127394551587 is an apocalyptic number.

127394551587 is a deficient number, since it is larger than the sum of its proper divisors (42464850533).

127394551587 is an equidigital number, since it uses as much as digits as its factorization.

127394551587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42464850532.

The product of its digits is 10584000, while the sum is 57.

The spelling of 127394551587 in words is "one hundred twenty-seven billion, three hundred ninety-four million, five hundred fifty-one thousand, five hundred eighty-seven".