154156706861 has 2 divisors, whose sum is σ = 154156706862. Its totient is φ = 154156706860.

The previous prime is 154156706831. The next prime is 154156706933. The reversal of 154156706861 is 168607651451.

154156706861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109028077636 + 45128629225 = 330194^2 + 212435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154156706861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154156706831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77078353430 + 77078353431.

It is an arithmetic number, because the mean of its divisors is an integer number (77078353431).

Almost surely, 2^154156706861 is an apocalyptic number.

It is an amenable number.

154156706861 is a deficient number, since it is larger than the sum of its proper divisors (1).

154156706861 is an equidigital number, since it uses as much as digits as its factorization.

154156706861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 50.

It can be divided in two parts, 15415 and 6706861, that added together give a palindrome (6722276).

The spelling of 154156706861 in words is "one hundred fifty-four billion, one hundred fifty-six million, seven hundred six thousand, eight hundred sixty-one".