11920501205 has 8 divisors (see below), whose sum is σ = 14452072152. Its totient is φ = 9438087168.

The previous prime is 11920501199. The next prime is 11920501211. The reversal of 11920501205 is 50210502911.

It is an interprime number because it is at equal distance from previous prime (11920501199) and next prime (11920501211).

It can be written as a sum of positive squares in 4 ways, for example, as 60855601 + 11859645604 = 7801^2 + 108902^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11920501205 - 2⁶ = 11920501141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12288692 + ... + 12289661.

It is an arithmetic number, because the mean of its divisors is an integer number (1806509019).

Almost surely, 2^11920501205 is an apocalyptic number.

It is an amenable number.

11920501205 is a deficient number, since it is larger than the sum of its proper divisors (2531570947).

11920501205 is an equidigital number, since it uses as much as digits as its factorization.

11920501205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24578455.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 11920501205 in words is "eleven billion, nine hundred twenty million, five hundred one thousand, two hundred five".