11138400265 has 8 divisors (see below), whose sum is σ = 13727325960. Its totient is φ = 8669889792.

The previous prime is 11138400227. The next prime is 11138400271. The reversal of 11138400265 is 56200483111.

It can be written as a sum of positive squares in 4 ways, for example, as 5139742864 + 5998657401 = 71692^2 + 77451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11138400265 is a prime.

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, 30103600 + ... + 30103969.

It is an arithmetic number, because the mean of its divisors is an integer number (1715915745).

Almost surely, 2^11138400265 is an apocalyptic number.

It is an amenable number.

11138400265 is a deficient number, since it is larger than the sum of its proper divisors (2588925695).

11138400265 is an equidigital number, since it uses as much as digits as its factorization.

11138400265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60207611.

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 11138400265 its reverse (56200483111), we get a palindrome (67338883376).

The spelling of 11138400265 in words is "eleven billion, one hundred thirty-eight million, four hundred thousand, two hundred sixty-five".