51443561463 has 16 divisors (see below), whose sum is σ = 78427888896. Its totient is φ = 29382183360.

The previous prime is 51443561461. The next prime is 51443561479. The reversal of 51443561463 is 36416534415.

It is a happy number.

It is not a de Polignac number, because 51443561463 - 2¹ = 51443561461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51443561461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544278 + ... + 631763.

It is an arithmetic number, because the mean of its divisors is an integer number (4901743056).

Almost surely, 2^51443561463 is an apocalyptic number.

51443561463 is a deficient number, since it is larger than the sum of its proper divisors (26984327433).

51443561463 is a wasteful number, since it uses less digits than its factorization.

51443561463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178134.

The product of its digits is 518400, while the sum is 42.

The spelling of 51443561463 in words is "fifty-one billion, four hundred forty-three million, five hundred sixty-one thousand, four hundred sixty-three".