51274253646561 has 16 divisors (see below), whose sum is σ = 74582337009600. Its totient is φ = 31074636726720.

The previous prime is 51274253646547. The next prime is 51274253646563. The reversal of 51274253646561 is 16564635247215.

It is not a de Polignac number, because 51274253646561 - 2¹³ = 51274253638369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51274253646563) 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, 15153450 + ... + 18225683.

It is an arithmetic number, because the mean of its divisors is an integer number (4661396063100).

Almost surely, 2^{51274253646561} is an apocalyptic number.

It is an amenable number.

51274253646561 is a deficient number, since it is larger than the sum of its proper divisors (23308083363039).

51274253646561 is a wasteful number, since it uses less digits than its factorization.

51274253646561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33425696.

The product of its digits is 36288000, while the sum is 57.

The spelling of 51274253646561 in words is "fifty-one trillion, two hundred seventy-four billion, two hundred fifty-three million, six hundred forty-six thousand, five hundred sixty-one".