26123729812 has 24 divisors (see below), whose sum is σ = 48187882400. Its totient is φ = 12357626976.

The previous prime is 26123729771. The next prime is 26123729857. The reversal of 26123729812 is 21892732162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176403 + ... + 288730.

Almost surely, 2^26123729812 is an apocalyptic number.

It is an amenable number.

26123729812 is a deficient number, since it is larger than the sum of its proper divisors (22064152588).

26123729812 is a wasteful number, since it uses less digits than its factorization.

26123729812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465895 (or 465893 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The spelling of 26123729812 in words is "twenty-six billion, one hundred twenty-three million, seven hundred twenty-nine thousand, eight hundred twelve".