51651501560541 has 12 divisors (see below), whose sum is σ = 74607939747900. Its totient is φ = 34434235017600.

The previous prime is 51651501560509. The next prime is 51651501560569. The reversal of 51651501560541 is 14506510515615.

51651501560541 is a `hidden beast` number, since 5 + 1 + 6 + 5 + 1 + 50 + 1 + 56 + 0 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38894817838041 + 12756683722500 = 6236571^2 + 3571650^2 .

It is not a de Polignac number, because 51651501560541 - 2⁵ = 51651501560509 is a prime.

It is a super-2 number, since 2×51651501560541² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651501565541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4915260 + ... + 11289941.

It is an arithmetic number, because the mean of its divisors is an integer number (6217328312325).

Almost surely, 2^{51651501560541} is an apocalyptic number.

It is an amenable number.

51651501560541 is a deficient number, since it is larger than the sum of its proper divisors (22956438187359).

51651501560541 is a wasteful number, since it uses less digits than its factorization.

51651501560541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16559356 (or 16559353 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 45.

The spelling of 51651501560541 in words is "fifty-one trillion, six hundred fifty-one billion, five hundred one million, five hundred sixty thousand, five hundred forty-one".