26240436121 has 9 divisors (see below), whose sum is σ = 27434823829. Its totient is φ = 25095983836.

The previous prime is 26240436109. The next prime is 26240436127. The reversal of 26240436121 is 12163404262.

The square root of 26240436121 is 161989.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 26240436121 - 2⁷ = 26240435993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26240436127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3722226 + ... + 3729268.

Almost surely, 2^26240436121 is an apocalyptic number.

26240436121 is the 161989-th square number.

26240436121 is the 80995-th centered octagonal number.

It is an amenable number.

26240436121 is a deficient number, since it is larger than the sum of its proper divisors (1194387708).

26240436121 is an frugal number, since it uses more digits than its factorization.

26240436121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14132 (or 7066 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 26240436121 in words is "twenty-six billion, two hundred forty million, four hundred thirty-six thousand, one hundred twenty-one".