154361412449 has 2 divisors, whose sum is σ = 154361412450. Its totient is φ = 154361412448.

The previous prime is 154361412419. The next prime is 154361412467. The reversal of 154361412449 is 944214163451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120136412449 + 34225000000 = 346607^2 + 185000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154361412449 is a prime.

It is not a weakly prime, because it can be changed into another prime (154361412409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77180706224 + 77180706225.

It is an arithmetic number, because the mean of its divisors is an integer number (77180706225).

Almost surely, 2^154361412449 is an apocalyptic number.

It is an amenable number.

154361412449 is a deficient number, since it is larger than the sum of its proper divisors (1).

154361412449 is an equidigital number, since it uses as much as digits as its factorization.

154361412449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 44.

The spelling of 154361412449 in words is "one hundred fifty-four billion, three hundred sixty-one million, four hundred twelve thousand, four hundred forty-nine".