51147605349 has 24 divisors (see below), whose sum is σ = 74010768000. Its totient is φ = 34038059328.

The previous prime is 51147605317. The next prime is 51147605371. The reversal of 51147605349 is 94350674115.

51147605349 is a `hidden beast` number, since 5 + 1 + 1 + 4 + 7 + 605 + 34 + 9 = 666.

It is not a de Polignac number, because 51147605349 - 2⁵ = 51147605317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51147605149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17901129 + ... + 17903985.

It is an arithmetic number, because the mean of its divisors is an integer number (3083782000).

Almost surely, 2^51147605349 is an apocalyptic number.

It is an amenable number.

51147605349 is a deficient number, since it is larger than the sum of its proper divisors (22863162651).

51147605349 is a wasteful number, since it uses less digits than its factorization.

51147605349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689 (or 5686 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 51147605349 in words is "fifty-one billion, one hundred forty-seven million, six hundred five thousand, three hundred forty-nine".