126526600019 has 4 divisors (see below), whose sum is σ = 128308664880. Its totient is φ = 124744535160.

The previous prime is 126526600001. The next prime is 126526600051. The reversal of 126526600019 is 910006625621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910006625621 = 19 ⋅47895085559.

It is a cyclic number.

It is not a de Polignac number, because 126526600019 - 2¹⁶ = 126526534483 is a prime.

It is a super-2 number, since 2×126526600019² (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 (126526620019) 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, 891032324 + ... + 891032465.

It is an arithmetic number, because the mean of its divisors is an integer number (32077166220).

Almost surely, 2^126526600019 is an apocalyptic number.

126526600019 is a deficient number, since it is larger than the sum of its proper divisors (1782064861).

126526600019 is an equidigital number, since it uses as much as digits as its factorization.

126526600019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782064860.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 126526600019 in words is "one hundred twenty-six billion, five hundred twenty-six million, six hundred thousand, nineteen".