154705510696489 has 9 divisors (see below), whose sum is σ = 164341372658071. Its totient is φ = 145604987528800.

The previous prime is 154705510696441. The next prime is 154705510696501. The reversal of 154705510696489 is 984696015507451.

The square root of 154705510696489 is 12438067.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 120445466805225 + 34260043891264 = 10974765^2 + 5853208^2 .

It is a de Polignac number, because none of the positive numbers 2^k-154705510696489 is a prime.

It is a super-2 number, since 2×154705510696489² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154705510696189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 211081314 + ... + 211812964.

Almost surely, 2^{154705510696489} is an apocalyptic number.

154705510696489 is the 12438067-th square number.

154705510696489 is the 6219034-th centered octagonal number.

It is an amenable number.

154705510696489 is a deficient number, since it is larger than the sum of its proper divisors (9635861961582).

154705510696489 is an frugal number, since it uses more digits than its factorization.

154705510696489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463336 (or 731668 counting only the distinct ones).

The product of its (nonzero) digits is 326592000, while the sum is 70.

The spelling of 154705510696489 in words is "one hundred fifty-four trillion, seven hundred five billion, five hundred ten million, six hundred ninety-six thousand, four hundred eighty-nine".