2518781012 has 36 divisors (see below), whose sum is σ = 4924494708. Its totient is φ = 1126118400.

The previous prime is 2518781011. The next prime is 2518781017. The reversal of 2518781012 is 2101878152.

It can be written as a sum of positive squares in 2 ways, for example, as 1426875076 + 1091905936 = 37774^2 + 33044^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2518781011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13133 + ... + 72180.

Almost surely, 2^2518781012 is an apocalyptic number.

2518781012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2518781012 is a deficient number, since it is larger than the sum of its proper divisors (2405713696).

2518781012 is a wasteful number, since it uses less digits than its factorization.

2518781012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85400 (or 85387 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 35.

The square root of 2518781012 is about 50187.4587123118. The cubic root of 2518781012 is about 1360.5989669908.

The spelling of 2518781012 in words is "two billion, five hundred eighteen million, seven hundred eighty-one thousand, twelve".