127138619719 has 8 divisors (see below), whose sum is σ = 133939578240. Its totient is φ = 120348606456.

The previous prime is 127138619711. The next prime is 127138619737. The reversal of 127138619719 is 917916831721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127138619719 - 2³ = 127138619711 is a prime.

It is a super-2 number, since 2×127138619719² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127138619719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127138619711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2712457 + ... + 2758930.

It is an arithmetic number, because the mean of its divisors is an integer number (16742447280).

Almost surely, 2^127138619719 is an apocalyptic number.

127138619719 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

127138619719 is a deficient number, since it is larger than the sum of its proper divisors (6800958521).

127138619719 is a wasteful number, since it uses less digits than its factorization.

127138619719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5472629.

The product of its digits is 1143072, while the sum is 55.

The spelling of 127138619719 in words is "one hundred twenty-seven billion, one hundred thirty-eight million, six hundred nineteen thousand, seven hundred nineteen".