51534071663 has 8 divisors (see below), whose sum is σ = 52011469440. Its totient is φ = 51058197720.

The previous prime is 51534071629. The next prime is 51534071671. The reversal of 51534071663 is 36617043515.

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 51534071663 - 2⁶ = 51534071599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51534071663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51534071263) 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, 312953 + ... + 448338.

It is an arithmetic number, because the mean of its divisors is an integer number (6501433680).

Almost surely, 2^51534071663 is an apocalyptic number.

51534071663 is a deficient number, since it is larger than the sum of its proper divisors (477397777).

51534071663 is a wasteful number, since it uses less digits than its factorization.

51534071663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761917.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 51534071663 in words is "fifty-one billion, five hundred thirty-four million, seventy-one thousand, six hundred sixty-three".