2491306058574 has 64 divisors (see below), whose sum is σ = 5594556211200. Its totient is φ = 821707812576.

The previous prime is 2491306058573. The next prime is 2491306058699. The reversal of 2491306058574 is 4758506031942.

It is a happy number.

2491306058574 is a `hidden beast` number, since 2 + 4 + 9 + 1 + 3 + 0 + 60 + 5 + 8 + 574 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2491306058574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491306058573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4088467 + ... + 4658129.

It is an arithmetic number, because the mean of its divisors is an integer number (87414940800).

It is a 1-persistent number, because it is pandigital, but 2⋅2491306058574 = 4982612117148 is not.

Almost surely, 2^{2491306058574} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2491306058574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2797278105600).

2491306058574 is an abundant number, since it is smaller than the sum of its proper divisors (3103250152626).

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

2491306058574 is a wasteful number, since it uses less digits than its factorization.

2491306058574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570526 (or 570520 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 2491306058574 in words is "two trillion, four hundred ninety-one billion, three hundred six million, fifty-eight thousand, five hundred seventy-four".