154340500861 has 2 divisors, whose sum is σ = 154340500862. Its totient is φ = 154340500860.

The previous prime is 154340500817. The next prime is 154340500981. The reversal of 154340500861 is 168005043451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151979124025 + 2361376836 = 389845^2 + 48594^2 .

It is a cyclic number.

It is not a de Polignac number, because 154340500861 - 2⁷ = 154340500733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154340500861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154340500361) 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 as a sum of consecutive naturals, namely, 77170250430 + 77170250431.

It is an arithmetic number, because the mean of its divisors is an integer number (77170250431).

Almost surely, 2^154340500861 is an apocalyptic number.

It is an amenable number.

154340500861 is a deficient number, since it is larger than the sum of its proper divisors (1).

154340500861 is an equidigital number, since it uses as much as digits as its factorization.

154340500861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 154340500861 in words is "one hundred fifty-four billion, three hundred forty million, five hundred thousand, eight hundred sixty-one".