2451216136 has 16 divisors (see below), whose sum is σ = 4598932140. Its totient is φ = 1224834240.

The previous prime is 2451216113. The next prime is 2451216137. The reversal of 2451216136 is 6316121542.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2450844036 + 372100 = 49506^2 + 610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2451216098 and 2451216107.

It is not an unprimeable number, because it can be changed into a prime (2451216137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83155 + ... + 108706.

Almost surely, 2^2451216136 is an apocalyptic number.

It is an amenable number.

2451216136 is a deficient number, since it is larger than the sum of its proper divisors (2147716004).

2451216136 is a wasteful number, since it uses less digits than its factorization.

2451216136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193464 (or 193460 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 2451216136 is about 49509.7579876937. The cubic root of 2451216136 is about 1348.3227704925.

Adding to 2451216136 its reverse (6316121542), we get a palindrome (8767337678).

The spelling of 2451216136 in words is "two billion, four hundred fifty-one million, two hundred sixteen thousand, one hundred thirty-six".