11835726015481 has 3 divisors (see below), whose sum is σ = 11835729455791. Its totient is φ = 11835722575172.

The previous prime is 11835726015479. The next prime is 11835726015571. The reversal of 11835726015481 is 18451062753811.

The square root of 11835726015481 is 3440309.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 11441367135081 + 394358880400 = 3382509^2 + 627980^2 .

It is not a de Polignac number, because 11835726015481 - 2¹ = 11835726015479 is a prime.

It is a super-2 number, since 2×11835726015481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11835726015461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1720155 + ... + 5160463.

Almost surely, 2^{11835726015481} is an apocalyptic number.

11835726015481 is the 3440309-th square number.

11835726015481 is the 1720155-th centered octagonal number.

It is an amenable number.

11835726015481 is a deficient number, since it is larger than the sum of its proper divisors (3440310).

11835726015481 is an frugal number, since it uses more digits than its factorization.

11835726015481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6880618 (or 3440309 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 52.

The spelling of 11835726015481 in words is "eleven trillion, eight hundred thirty-five billion, seven hundred twenty-six million, fifteen thousand, four hundred eighty-one".