51551405013 has 8 divisors (see below), whose sum is σ = 72778454208. Its totient is φ = 32345979584.

The previous prime is 51551405011. The next prime is 51551405021. The reversal of 51551405013 is 31050415515.

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

It is a cyclic number.

It is not a de Polignac number, because 51551405013 - 2¹ = 51551405011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51551405011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505405881 + ... + 505405982.

It is an arithmetic number, because the mean of its divisors is an integer number (9097306776).

Almost surely, 2^51551405013 is an apocalyptic number.

It is an amenable number.

51551405013 is a deficient number, since it is larger than the sum of its proper divisors (21227049195).

51551405013 is a wasteful number, since it uses less digits than its factorization.

51551405013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010811883.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 51551405013 in words is "fifty-one billion, five hundred fifty-one million, four hundred five thousand, thirteen".