154945567138457 has 8 divisors (see below), whose sum is σ = 156383762733000. Its totient is φ = 153507674755584.

The previous prime is 154945567138451. The next prime is 154945567138517. The reversal of 154945567138457 is 754831765549451.

It can be written as a sum of positive squares in 4 ways, for example, as 7186372309081 + 147759194829376 = 2680741^2 + 12155624^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154945567138457 - 2³⁰ = 154944493396633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154945567138451) 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 in 7 ways as a sum of consecutive naturals, for example, 74776082 + ... + 76820267.

It is an arithmetic number, because the mean of its divisors is an integer number (19547970341625).

Almost surely, 2^{154945567138457} is an apocalyptic number.

It is an amenable number.

154945567138457 is a deficient number, since it is larger than the sum of its proper divisors (1438195594543).

154945567138457 is a wasteful number, since it uses less digits than its factorization.

154945567138457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151605835.

The product of its digits is 2540160000, while the sum is 74.

The spelling of 154945567138457 in words is "one hundred fifty-four trillion, nine hundred forty-five billion, five hundred sixty-seven million, one hundred thirty-eight thousand, four hundred fifty-seven".