154414463681 has 2 divisors, whose sum is σ = 154414463682. Its totient is φ = 154414463680.

The previous prime is 154414463647. The next prime is 154414463737. The reversal of 154414463681 is 186364414451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137622450625 + 16792013056 = 370975^2 + 129584^2 .

It is a cyclic number.

It is not a de Polignac number, because 154414463681 - 2⁶ = 154414463617 is a prime.

It is a super-2 number, since 2×154414463681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154414463611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77207231840 + 77207231841.

It is an arithmetic number, because the mean of its divisors is an integer number (77207231841).

Almost surely, 2^154414463681 is an apocalyptic number.

It is an amenable number.

154414463681 is a deficient number, since it is larger than the sum of its proper divisors (1).

154414463681 is an equidigital number, since it uses as much as digits as its factorization.

154414463681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1105920, while the sum is 47.

The spelling of 154414463681 in words is "one hundred fifty-four billion, four hundred fourteen million, four hundred sixty-three thousand, six hundred eighty-one".