154355245669 has 2 divisors, whose sum is σ = 154355245670. Its totient is φ = 154355245668.

The previous prime is 154355245631. The next prime is 154355245703. The reversal of 154355245669 is 966542553451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126017900100 + 28337345569 = 354990^2 + 168337^2 .

It is a cyclic number.

It is not a de Polignac number, because 154355245669 - 2¹⁵ = 154355212901 is a prime.

It is a super-2 number, since 2×154355245669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154355245609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77177622834 + 77177622835.

It is an arithmetic number, because the mean of its divisors is an integer number (77177622835).

Almost surely, 2^154355245669 is an apocalyptic number.

It is an amenable number.

154355245669 is a deficient number, since it is larger than the sum of its proper divisors (1).

154355245669 is an equidigital number, since it uses as much as digits as its factorization.

154355245669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440000, while the sum is 55.

The spelling of 154355245669 in words is "one hundred fifty-four billion, three hundred fifty-five million, two hundred forty-five thousand, six hundred sixty-nine".