115725679019 has 4 divisors (see below), whose sum is σ = 117622821360. Its totient is φ = 113828536680.

The previous prime is 115725679001. The next prime is 115725679021. The reversal of 115725679019 is 910976527511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910976527511 = 211 ⋅4317424301.

It is a cyclic number.

It is not a de Polignac number, because 115725679019 - 2¹⁶ = 115725613483 is a prime.

It is a super-2 number, since 2×115725679019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115725679519) 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, 948571079 + ... + 948571200.

It is an arithmetic number, because the mean of its divisors is an integer number (29405705340).

Almost surely, 2^115725679019 is an apocalyptic number.

115725679019 is a deficient number, since it is larger than the sum of its proper divisors (1897142341).

115725679019 is an equidigital number, since it uses as much as digits as its factorization.

115725679019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897142340.

The product of its (nonzero) digits is 1190700, while the sum is 53.

The spelling of 115725679019 in words is "one hundred fifteen billion, seven hundred twenty-five million, six hundred seventy-nine thousand, nineteen".