2491125940343 has 4 divisors (see below), whose sum is σ = 2622237831960. Its totient is φ = 2360014048728.

The previous prime is 2491125940301. The next prime is 2491125940423. The reversal of 2491125940343 is 3430495211942.

It is a happy number.

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 2491125940343 - 2²⁰ = 2491124891767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491125940943) 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, 65555945780 + ... + 65555945817.

It is an arithmetic number, because the mean of its divisors is an integer number (655559457990).

Almost surely, 2^{2491125940343} is an apocalyptic number.

2491125940343 is a deficient number, since it is larger than the sum of its proper divisors (131111891617).

2491125940343 is a wasteful number, since it uses less digits than its factorization.

2491125940343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131111891616.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 2491125940343 in words is "two trillion, four hundred ninety-one billion, one hundred twenty-five million, nine hundred forty thousand, three hundred forty-three".