51125608551 has 16 divisors (see below), whose sum is σ = 71056402560. Its totient is φ = 32657220960.

The previous prime is 51125608531. The next prime is 51125608579. The reversal of 51125608551 is 15580652115.

It is not a de Polignac number, because 51125608551 - 2¹⁰ = 51125607527 is a prime.

It is a super-2 number, since 2×51125608551² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125608531) 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, 2231545 + ... + 2254338.

It is an arithmetic number, because the mean of its divisors is an integer number (4441025160).

Almost surely, 2^51125608551 is an apocalyptic number.

51125608551 is a deficient number, since it is larger than the sum of its proper divisors (19930794009).

51125608551 is a wasteful number, since it uses less digits than its factorization.

51125608551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486046.

The product of its (nonzero) digits is 60000, while the sum is 39.

The spelling of 51125608551 in words is "fifty-one billion, one hundred twenty-five million, six hundred eight thousand, five hundred fifty-one".