2516011778 has 16 divisors (see below), whose sum is σ = 4319113344. Its totient is φ = 1076803200.

The previous prime is 2516011777. The next prime is 2516011811. The reversal of 2516011778 is 8771106152.

It is a happy number.

2516011778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2516011777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113423 + ... + 133778.

It is an arithmetic number, because the mean of its divisors is an integer number (269944584).

Almost surely, 2^2516011778 is an apocalyptic number.

2516011778 is a deficient number, since it is larger than the sum of its proper divisors (1803101566).

2516011778 is a wasteful number, since it uses less digits than its factorization.

2516011778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247937.

The product of its (nonzero) digits is 23520, while the sum is 38.

The square root of 2516011778 is about 50159.8622207039. The cubic root of 2516011778 is about 1360.1001544609.

The spelling of 2516011778 in words is "two billion, five hundred sixteen million, eleven thousand, seven hundred seventy-eight".