2557780758 has 24 divisors (see below), whose sum is σ = 5968155648. Its totient is φ = 787009392.

The previous prime is 2557780723. The next prime is 2557780793. The reversal of 2557780758 is 8570877552.

2557780758 is a `hidden beast` number, since 2 + 557 + 7 + 80 + 7 + 5 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (2557780723) and next prime (2557780793).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5465110 + ... + 5465577.

It is an arithmetic number, because the mean of its divisors is an integer number (248673152).

Almost surely, 2^2557780758 is an apocalyptic number.

2557780758 is an abundant number, since it is smaller than the sum of its proper divisors (3410374890).

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

2557780758 is a wasteful number, since it uses less digits than its factorization.

2557780758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10930708 (or 10930705 counting only the distinct ones).

The product of its (nonzero) digits is 5488000, while the sum is 54.

The square root of 2557780758 is about 50574.5069971028. The cubic root of 2557780758 is about 1367.5853461390.

The spelling of 2557780758 in words is "two billion, five hundred fifty-seven million, seven hundred eighty thousand, seven hundred fifty-eight".