51047656419 has 8 divisors (see below), whose sum is σ = 68142781120. Its totient is φ = 33992151336.

The previous prime is 51047656417. The next prime is 51047656427. The reversal of 51047656419 is 91465674015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51047656419 - 2¹ = 51047656417 is a prime.

It is a super-2 number, since 2×51047656419² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51047656417) 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, 9901897 + ... + 9907050.

It is an arithmetic number, because the mean of its divisors is an integer number (8517847640).

Almost surely, 2^51047656419 is an apocalyptic number.

51047656419 is a deficient number, since it is larger than the sum of its proper divisors (17095124701).

51047656419 is a wasteful number, since it uses less digits than its factorization.

51047656419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19809809.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 51047656419 in words is "fifty-one billion, forty-seven million, six hundred fifty-six thousand, four hundred nineteen".