3291246917421 has 4 divisors (see below), whose sum is σ = 4388329223232. Its totient is φ = 2194164611612.

The previous prime is 3291246917389. The next prime is 3291246917489. The reversal of 3291246917421 is 1247196421923.

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 3291246917421 - 2⁵ = 3291246917389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291246917821) 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, 548541152901 + ... + 548541152906.

It is an arithmetic number, because the mean of its divisors is an integer number (1097082305808).

Almost surely, 2^{3291246917421} is an apocalyptic number.

It is an amenable number.

3291246917421 is a deficient number, since it is larger than the sum of its proper divisors (1097082305811).

3291246917421 is a wasteful number, since it uses less digits than its factorization.

3291246917421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097082305810.

The product of its digits is 1306368, while the sum is 51.

The spelling of 3291246917421 in words is "three trillion, two hundred ninety-one billion, two hundred forty-six million, nine hundred seventeen thousand, four hundred twenty-one".