11957262481 has 4 divisors (see below), whose sum is σ = 12073352512. Its totient is φ = 11841172452.

The previous prime is 11957262451. The next prime is 11957262529. The reversal of 11957262481 is 18426275911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18426275911 = 17 ⋅1083898583.

It is a cyclic number.

It is not a de Polignac number, because 11957262481 - 2⁹ = 11957261969 is a prime.

It is a super-2 number, since 2×11957262481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11957262431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58044861 + ... + 58045066.

It is an arithmetic number, because the mean of its divisors is an integer number (3018338128).

Almost surely, 2^11957262481 is an apocalyptic number.

It is an amenable number.

11957262481 is a deficient number, since it is larger than the sum of its proper divisors (116090031).

11957262481 is a wasteful number, since it uses less digits than its factorization.

11957262481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116090030.

The product of its digits is 241920, while the sum is 46.

The spelling of 11957262481 in words is "eleven billion, nine hundred fifty-seven million, two hundred sixty-two thousand, four hundred eighty-one".