2491802443728 has 120 divisors (see below), whose sum is σ = 7510712096160. Its totient is φ = 766637349120.

The previous prime is 2491802443679. The next prime is 2491802443747. The reversal of 2491802443728 is 8273442081942.

2491802443728 is a `hidden beast` number, since 2 + 4 + 9 + 180 + 2 + 4 + 437 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22294063 + ... + 22405553.

It is an arithmetic number, because the mean of its divisors is an integer number (62589267468).

Almost surely, 2^{2491802443728} is an apocalyptic number.

It is an amenable number.

2491802443728 is an abundant number, since it is smaller than the sum of its proper divisors (5018909652432).

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

2491802443728 is a wasteful number, since it uses less digits than its factorization.

2491802443728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123457 (or 123448 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 2491802443728 in words is "two trillion, four hundred ninety-one billion, eight hundred two million, four hundred forty-three thousand, seven hundred twenty-eight".