11799281581491 has 8 divisors (see below), whose sum is σ = 15947887434640. Its totient is φ = 7758431724672.

The previous prime is 11799281581481. The next prime is 11799281581513. The reversal of 11799281581491 is 19418518299711.

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

It is not a de Polignac number, because 11799281581491 - 2⁶ = 11799281581427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11799281581471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26938998826 + ... + 26938999263.

It is an arithmetic number, because the mean of its divisors is an integer number (1993485929330).

Almost surely, 2^{11799281581491} is an apocalyptic number.

11799281581491 is a deficient number, since it is larger than the sum of its proper divisors (4148605853149).

11799281581491 is an equidigital number, since it uses as much as digits as its factorization.

11799281581491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53877998165.

The product of its digits is 13063680, while the sum is 66.

The spelling of 11799281581491 in words is "eleven trillion, seven hundred ninety-nine billion, two hundred eighty-one million, five hundred eighty-one thousand, four hundred ninety-one".