51467856461 has 4 divisors (see below), whose sum is σ = 58820407392. Its totient is φ = 44115305532.

The previous prime is 51467856413. The next prime is 51467856527. The reversal of 51467856461 is 16465876415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51467856461 - 2⁶ = 51467856397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51467850461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3676275455 + ... + 3676275468.

It is an arithmetic number, because the mean of its divisors is an integer number (14705101848).

Almost surely, 2^51467856461 is an apocalyptic number.

It is an amenable number.

51467856461 is a deficient number, since it is larger than the sum of its proper divisors (7352550931).

51467856461 is an equidigital number, since it uses as much as digits as its factorization.

51467856461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7352550930.

The product of its digits is 4838400, while the sum is 53.

The spelling of 51467856461 in words is "fifty-one billion, four hundred sixty-seven million, eight hundred fifty-six thousand, four hundred sixty-one".