51135246433461 has 4 divisors (see below), whose sum is σ = 68180328577952. Its totient is φ = 34090164288972.

The previous prime is 51135246433423. The next prime is 51135246433501. The reversal of 51135246433461 is 16433464253115.

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 not a de Polignac number, because 51135246433461 - 2²⁵ = 51135212879029 is a prime.

It is a super-2 number, since 2×51135246433461² (a number of 28 digits) contains 22 as substring.

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 51135246433461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51135246431461) 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, 8522541072241 + ... + 8522541072246.

It is an arithmetic number, because the mean of its divisors is an integer number (17045082144488).

Almost surely, 2^{51135246433461} is an apocalyptic number.

It is an amenable number.

51135246433461 is a deficient number, since it is larger than the sum of its proper divisors (17045082144491).

51135246433461 is a wasteful number, since it uses less digits than its factorization.

51135246433461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17045082144490.

The product of its digits is 3110400, while the sum is 48.

The spelling of 51135246433461 in words is "fifty-one trillion, one hundred thirty-five billion, two hundred forty-six million, four hundred thirty-three thousand, four hundred sixty-one".