11858974401 has 4 divisors (see below), whose sum is σ = 15811965872. Its totient is φ = 7905982932.

The previous prime is 11858974397. The next prime is 11858974403. The reversal of 11858974401 is 10447985811.

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.

It is not a de Polignac number, because 11858974401 - 2² = 11858974397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11858974403) 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, 1976495731 + ... + 1976495736.

It is an arithmetic number, because the mean of its divisors is an integer number (3952991468).

Almost surely, 2^11858974401 is an apocalyptic number.

It is an amenable number.

11858974401 is a deficient number, since it is larger than the sum of its proper divisors (3952991471).

11858974401 is an equidigital number, since it uses as much as digits as its factorization.

11858974401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952991470.

The product of its (nonzero) digits is 322560, while the sum is 48.

The spelling of 11858974401 in words is "eleven billion, eight hundred fifty-eight million, nine hundred seventy-four thousand, four hundred one".