26124429685 has 4 divisors (see below), whose sum is σ = 31349315628. Its totient is φ = 20899543744.

The previous prime is 26124429671. The next prime is 26124429689. The reversal of 26124429685 is 58692442162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58692442162 = 2 ⋅29346221081.

It can be written as a sum of positive squares in 2 ways, for example, as 5372010436 + 20752419249 = 73294^2 + 144057^2 .

It is a cyclic number.

It is not a de Polignac number, because 26124429685 - 2¹⁹ = 26123905397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26124429689) 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, 2612442964 + ... + 2612442973.

It is an arithmetic number, because the mean of its divisors is an integer number (7837328907).

Almost surely, 2^26124429685 is an apocalyptic number.

It is an amenable number.

26124429685 is a deficient number, since it is larger than the sum of its proper divisors (5224885943).

26124429685 is an equidigital number, since it uses as much as digits as its factorization.

26124429685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224885942.

The product of its digits is 1658880, while the sum is 49.

The spelling of 26124429685 in words is "twenty-six billion, one hundred twenty-four million, four hundred twenty-nine thousand, six hundred eighty-five".