26123791406 has 4 divisors (see below), whose sum is σ = 39185687112. Its totient is φ = 13061895702.

The previous prime is 26123791367. The next prime is 26123791409. The reversal of 26123791406 is 60419732162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60419732162 = 2 ⋅30209866081.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26123791409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6530947850 + ... + 6530947853.

It is an arithmetic number, because the mean of its divisors is an integer number (9796421778).

Almost surely, 2^26123791406 is an apocalyptic number.

26123791406 is a deficient number, since it is larger than the sum of its proper divisors (13061895706).

26123791406 is a wasteful number, since it uses less digits than its factorization.

26123791406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13061895705.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 26123791406 in words is "twenty-six billion, one hundred twenty-three million, seven hundred ninety-one thousand, four hundred six".