4048009002491 has 4 divisors (see below), whose sum is σ = 4093492249800. Its totient is φ = 4002525755184.

The previous prime is 4048009002481. The next prime is 4048009002503. The reversal of 4048009002491 is 1942009008404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4048009002491 - 2¹⁰ = 4048009001467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4048009002431) 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, 22741623521 + ... + 22741623698.

It is an arithmetic number, because the mean of its divisors is an integer number (1023373062450).

Almost surely, 2^{4048009002491} is an apocalyptic number.

4048009002491 is a deficient number, since it is larger than the sum of its proper divisors (45483247309).

4048009002491 is an equidigital number, since it uses as much as digits as its factorization.

4048009002491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45483247308.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 4048009002491 in words is "four trillion, forty-eight billion, nine million, two thousand, four hundred ninety-one".