2578124478 has 16 divisors (see below), whose sum is σ = 5427630720. Its totient is φ = 814144536.

The previous prime is 2578124467. The next prime is 2578124489. The reversal of 2578124478 is 8744218752.

It is an interprime number because it is at equal distance from previous prime (2578124467) and next prime (2578124489).

It is a Curzon number.

It is a congruent number.

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, 11307450 + ... + 11307677.

It is an arithmetic number, because the mean of its divisors is an integer number (339226920).

Almost surely, 2^2578124478 is an apocalyptic number.

2578124478 is an abundant number, since it is smaller than the sum of its proper divisors (2849506242).

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

2578124478 is a wasteful number, since it uses less digits than its factorization.

2578124478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22615151.

The product of its digits is 1003520, while the sum is 48.

The square root of 2578124478 is about 50775.2348886738. The cubic root of 2578124478 is about 1371.2015455645.

The spelling of 2578124478 in words is "two billion, five hundred seventy-eight million, one hundred twenty-four thousand, four hundred seventy-eight".