2550578052578 has 4 divisors (see below), whose sum is σ = 3825867078870. Its totient is φ = 1275289026288.

The previous prime is 2550578052577. The next prime is 2550578052601. The reversal of 2550578052578 is 8752508750552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2293004547289 + 257573505289 = 1514267^2 + 507517^2 .

It is not an unprimeable number, because it can be changed into a prime (2550578052571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637644513143 + ... + 637644513146.

Almost surely, 2^{2550578052578} is an apocalyptic number.

2550578052578 is a deficient number, since it is larger than the sum of its proper divisors (1275289026292).

2550578052578 is a wasteful number, since it uses less digits than its factorization.

2550578052578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275289026291.

The product of its (nonzero) digits is 39200000, while the sum is 59.

The spelling of 2550578052578 in words is "two trillion, five hundred fifty billion, five hundred seventy-eight million, fifty-two thousand, five hundred seventy-eight".