2578005755530 has 16 divisors (see below), whose sum is σ = 4640702477544. Its totient is φ = 1031137387200.

The previous prime is 2578005755527. The next prime is 2578005755543. The reversal of 2578005755530 is 355575008752.

It can be written as a sum of positive squares in 4 ways, for example, as 2538149226649 + 39856528881 = 1593157^2 + 199641^2 .

It is a super-2 number, since 2×2578005755530² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7947417 + ... + 8265436.

Almost surely, 2^{2578005755530} is an apocalyptic number.

2578005755530 is a deficient number, since it is larger than the sum of its proper divisors (2062696722014).

2578005755530 is a wasteful number, since it uses less digits than its factorization.

2578005755530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16228761.

The product of its (nonzero) digits is 7350000, while the sum is 52.

The spelling of 2578005755530 in words is "two trillion, five hundred seventy-eight billion, five million, seven hundred fifty-five thousand, five hundred thirty".