2491387291148 has 12 divisors (see below), whose sum is σ = 4982774582352. Its totient is φ = 1067737410480.

The previous prime is 2491387291121. The next prime is 2491387291153. The reversal of 2491387291148 is 8411927831942.

It is a happy number.

2491387291148 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44489058743 + ... + 44489058798.

It is an arithmetic number, because the mean of its divisors is an integer number (415231215196).

Almost surely, 2^{2491387291148} is an apocalyptic number.

2491387291148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2491387291148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2491387291148 is a wasteful number, since it uses less digits than its factorization.

2491387291148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88978117552 (or 88978117550 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 59.

The spelling of 2491387291148 in words is "two trillion, four hundred ninety-one billion, three hundred eighty-seven million, two hundred ninety-one thousand, one hundred forty-eight".