51551542443 has 8 divisors (see below), whose sum is σ = 69563527488. Its totient is φ = 33953626184.

The previous prime is 51551542429. The next prime is 51551542487. The reversal of 51551542443 is 34424515515.

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 51551542443 - 2²⁶ = 51484433579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51551532443) 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, 103516905 + ... + 103517402.

It is an arithmetic number, because the mean of its divisors is an integer number (8695440936).

Almost surely, 2^51551542443 is an apocalyptic number.

51551542443 is a deficient number, since it is larger than the sum of its proper divisors (18011985045).

51551542443 is a wasteful number, since it uses less digits than its factorization.

51551542443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207034393.

The product of its digits is 240000, while the sum is 39.

The spelling of 51551542443 in words is "fifty-one billion, five hundred fifty-one million, five hundred forty-two thousand, four hundred forty-three".