11581158158398 has 4 divisors (see below), whose sum is σ = 17371737237600. Its totient is φ = 5790579079198.

The previous prime is 11581158158389. The next prime is 11581158158411. The reversal of 11581158158398 is 89385185118511.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2895289539598 + ... + 2895289539601.

It is an arithmetic number, because the mean of its divisors is an integer number (4342934309400).

Almost surely, 2^{11581158158398} is an apocalyptic number.

11581158158398 is a deficient number, since it is larger than the sum of its proper divisors (5790579079202).

11581158158398 is an equidigital number, since it uses as much as digits as its factorization.

11581158158398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790579079201.

The product of its digits is 13824000, while the sum is 64.

The spelling of 11581158158398 in words is "eleven trillion, five hundred eighty-one billion, one hundred fifty-eight million, one hundred fifty-eight thousand, three hundred ninety-eight".