2616534778 has 64 divisors (see below), whose sum is σ = 4755687552. Its totient is φ = 1063802880.

The previous prime is 2616534743. The next prime is 2616534797. The reversal of 2616534778 is 8774356162.

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, 1684050 + ... + 1685602.

It is an arithmetic number, because the mean of its divisors is an integer number (74307618).

Almost surely, 2^2616534778 is an apocalyptic number.

2616534778 is a deficient number, since it is larger than the sum of its proper divisors (2139152774).

2616534778 is a wasteful number, since it uses less digits than its factorization.

2616534778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

The product of its digits is 1693440, while the sum is 49.

The square root of 2616534778 is about 51152.0750116747. The cubic root of 2616534778 is about 1377.9776401882.

The spelling of 2616534778 in words is "two billion, six hundred sixteen million, five hundred thirty-four thousand, seven hundred seventy-eight".