11651670033 has 4 divisors (see below), whose sum is σ = 15535560048. Its totient is φ = 7767780020.

The previous prime is 11651670007. The next prime is 11651670077. The reversal of 11651670033 is 33007615611.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33007615611 = 3 ⋅11002538537.

It is a cyclic number.

It is not a de Polignac number, because 11651670033 - 2¹⁴ = 11651653649 is a prime.

It is a super-2 number, since 2×11651670033² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11651669976 and 11651670003.

It is not an unprimeable number, because it can be changed into a prime (11651620033) 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, 1941945003 + ... + 1941945008.

It is an arithmetic number, because the mean of its divisors is an integer number (3883890012).

Almost surely, 2^11651670033 is an apocalyptic number.

It is an amenable number.

11651670033 is a deficient number, since it is larger than the sum of its proper divisors (3883890015).

11651670033 is an equidigital number, since it uses as much as digits as its factorization.

11651670033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883890014.

The product of its (nonzero) digits is 11340, while the sum is 33.

The spelling of 11651670033 in words is "eleven billion, six hundred fifty-one million, six hundred seventy thousand, thirty-three".