51040308249 has 32 divisors (see below), whose sum is σ = 86434179840. Its totient is φ = 29160245376.

The previous prime is 51040308233. The next prime is 51040308283. The reversal of 51040308249 is 94280304015.

51040308249 is a `hidden beast` number, since 5 + 1 + 0 + 403 + 0 + 8 + 249 = 666.

51040308249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51040308249 - 2⁴ = 51040308233 is a prime.

It is a super-2 number, since 2×51040308249² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51040308749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1075429 + ... + 1121885.

It is an arithmetic number, because the mean of its divisors is an integer number (2701068120).

Almost surely, 2^51040308249 is an apocalyptic number.

It is an amenable number.

51040308249 is a deficient number, since it is larger than the sum of its proper divisors (35393871591).

51040308249 is a wasteful number, since it uses less digits than its factorization.

51040308249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52286 (or 52280 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 51040308249 in words is "fifty-one billion, forty million, three hundred eight thousand, two hundred forty-nine".