11920710409 has 4 divisors (see below), whose sum is σ = 12548116240. Its totient is φ = 11293304580.

The previous prime is 11920710407. The next prime is 11920710413. The reversal of 11920710409 is 90401702911.

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 a cyclic number.

It is not a de Polignac number, because 11920710409 - 2¹ = 11920710407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11920710407) 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, 313702887 + ... + 313702924.

It is an arithmetic number, because the mean of its divisors is an integer number (3137029060).

Almost surely, 2^11920710409 is an apocalyptic number.

11920710409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11920710409 is a deficient number, since it is larger than the sum of its proper divisors (627405831).

11920710409 is an equidigital number, since it uses as much as digits as its factorization.

11920710409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627405830.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 11920710409 in words is "eleven billion, nine hundred twenty million, seven hundred ten thousand, four hundred nine".