51161711155701 has 16 divisors (see below), whose sum is σ = 68939092267200. Its totient is φ = 33746540067200.

The previous prime is 51161711155679. The next prime is 51161711155733. The reversal of 51161711155701 is 10755111716115.

51161711155701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51161711155701 - 2¹⁹ = 51161710631413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51161711155601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58480851 + ... + 59349248.

It is an arithmetic number, because the mean of its divisors is an integer number (4308693266700).

Almost surely, 2^{51161711155701} is an apocalyptic number.

It is an amenable number.

51161711155701 is a deficient number, since it is larger than the sum of its proper divisors (17777381111499).

51161711155701 is a wasteful number, since it uses less digits than its factorization.

51161711155701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117831636.

The product of its (nonzero) digits is 36750, while the sum is 42.

The spelling of 51161711155701 in words is "fifty-one trillion, one hundred sixty-one billion, seven hundred eleven million, one hundred fifty-five thousand, seven hundred one".