145538654117 has 8 divisors (see below), whose sum is σ = 154107538200. Its totient is φ = 136970635264.

The previous prime is 145538654113. The next prime is 145538654171. The reversal of 145538654117 is 711456835541.

It can be written as a sum of positive squares in 4 ways, for example, as 112994133316 + 32544520801 = 336146^2 + 180401^2 .

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

It is not a de Polignac number, because 145538654117 - 2² = 145538654113 is a prime.

It is a super-2 number, since 2×145538654117² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145538654113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147509 + ... + 559317.

It is an arithmetic number, because the mean of its divisors is an integer number (19263442275).

Almost surely, 2^145538654117 is an apocalyptic number.

145538654117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

145538654117 is a deficient number, since it is larger than the sum of its proper divisors (8568884083).

145538654117 is a wasteful number, since it uses less digits than its factorization.

145538654117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432615.

The product of its digits is 2016000, while the sum is 50.

The spelling of 145538654117 in words is "one hundred forty-five billion, five hundred thirty-eight million, six hundred fifty-four thousand, one hundred seventeen".