56154650521111 has 2 divisors, whose sum is σ = 56154650521112. Its totient is φ = 56154650521110.

The previous prime is 56154650521091. The next prime is 56154650521157. The reversal of 56154650521111 is 11112505645165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56154650521111 - 2¹⁷ = 56154650390039 is a prime.

It is a super-2 number, since 2×56154650521111² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56154650521511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28077325260555 + 28077325260556.

It is an arithmetic number, because the mean of its divisors is an integer number (28077325260556).

Almost surely, 2^{56154650521111} is an apocalyptic number.

56154650521111 is a deficient number, since it is larger than the sum of its proper divisors (1).

56154650521111 is an equidigital number, since it uses as much as digits as its factorization.

56154650521111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180000, while the sum is 43.

The spelling of 56154650521111 in words is "fifty-six trillion, one hundred fifty-four billion, six hundred fifty million, five hundred twenty-one thousand, one hundred eleven".