2491372775424 has 192 divisors, whose sum is σ = 7305166552320. Its totient is φ = 750264975360.

The previous prime is 2491372775401. The next prime is 2491372775431. The reversal of 2491372775424 is 4245772731942.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×2491372775424² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3422154 + ... + 4085814.

It is an arithmetic number, because the mean of its divisors is an integer number (38047742460).

Almost surely, 2^{2491372775424} is an apocalyptic number.

2491372775424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2491372775424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3652583276160).

2491372775424 is an abundant number, since it is smaller than the sum of its proper divisors (4813793776896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2491372775424 is a wasteful number, since it uses less digits than its factorization.

2491372775424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663746 (or 663726 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 57.

The spelling of 2491372775424 in words is "two trillion, four hundred ninety-one billion, three hundred seventy-two million, seven hundred seventy-five thousand, four hundred twenty-four".