126143691719 has 4 divisors (see below), whose sum is σ = 126145394544. Its totient is φ = 126141988896.

The previous prime is 126143691701. The next prime is 126143691763. The reversal of 126143691719 is 917196341621.

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 126143691719 - 2¹⁶ = 126143626183 is a prime.

It is a super-2 number, since 2×126143691719² (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 (126143691799) 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, 734987 + ... + 890220.

It is an arithmetic number, because the mean of its divisors is an integer number (31536348636).

Almost surely, 2^126143691719 is an apocalyptic number.

126143691719 is a deficient number, since it is larger than the sum of its proper divisors (1702825).

126143691719 is an equidigital number, since it uses as much as digits as its factorization.

126143691719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702824.

The product of its digits is 489888, while the sum is 50.

The spelling of 126143691719 in words is "one hundred twenty-six billion, one hundred forty-three million, six hundred ninety-one thousand, seven hundred nineteen".