2758505540 has 96 divisors (see below), whose sum is σ = 6706022400. Its totient is φ = 933636096.

The previous prime is 2758505539. The next prime is 2758505573. The reversal of 2758505540 is 455058572.

Together with 3947516859 it forms a betrothed pair.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4651484 + ... + 4652076.

It is an arithmetic number, because the mean of its divisors is an integer number (69854400).

Almost surely, 2^2758505540 is an apocalyptic number.

2758505540 is a gapful number since it is divisible by the number (20) 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 2758505540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3353011200).

2758505540 is an abundant number, since it is smaller than the sum of its proper divisors (3947516860).

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

2758505540 is a wasteful number, since it uses less digits than its factorization.

2758505540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 41.

The square root of 2758505540 is about 52521.4769403908. The cubic root of 2758505540 is about 1402.4625943381.

The spelling of 2758505540 in words is "two billion, seven hundred fifty-eight million, five hundred five thousand, five hundred forty".