51761162547 has 12 divisors (see below), whose sum is σ = 78701183080. Its totient is φ = 32691260448.

The previous prime is 51761162507. The next prime is 51761162591. The reversal of 51761162547 is 74526116715.

51761162547 is a `hidden beast` number, since 5 + 1 + 7 + 6 + 11 + 625 + 4 + 7 = 666.

It is not a de Polignac number, because 51761162547 - 2²² = 51756968243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51761162507) 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, 151348258 + ... + 151348599.

Almost surely, 2^51761162547 is an apocalyptic number.

51761162547 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51761162547 is a deficient number, since it is larger than the sum of its proper divisors (26940020533).

51761162547 is a wasteful number, since it uses less digits than its factorization.

51761162547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302696882 (or 302696879 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The spelling of 51761162547 in words is "fifty-one billion, seven hundred sixty-one million, one hundred sixty-two thousand, five hundred forty-seven".